just bought a 1993 mkiv twin turbo, need help
 

Hey, so okay i just bought a 1993 twin turbo mkiv from tyeeimports.com but they got it straight form japan and is already somewhat tuned up with onlya bout 365hp i was wondering what i could do to supe it up to like 600hp i dont really know anythign about cars :S haha but ever since i watched youtube clips of supras i was like yeah i want that car so a few months later i bought one its already got after market intercooler and abunch of stuff but how could i supe it up more just need some advice on what to do and what type of gauges to put in it, and if i should get subs or would that add too much weight, but i hope someoen could just tell me general specifications onw aht to do and how to tune it so its super fast, thanx, YouTube - WWW.TYEEIMPORTS.COM SUPRA MK4 WALK AROUND thats the car i just bought so if anyone can help would be sweet:)

Do you want 600hp or 600rwhp? Also, what do you want to do with it? Dragrace? Highway rolls? Roadrace? Autocross? Daily drive? Drift? etc...

street race pretty much, and i like have no clue what whp is hahah im only 20 and i saw a supra on youtube and i was like yeah dream car so i worked and stuff and a few months later i bought that one, i just want it to be super fast and look sick so pretty much just street racing and yeah haha im not too good with cars yet, but it seems pretty fast right now prolly one of the fastest in my town buti just wanna be able to beat this 2000 dodge viper super charged with 520hp hahah soo im just working to save up and do up my car and i just wanna know whats the best way to go

20yr, Supra, somewhat tuned up to 365hp (don't know what whp is), street racing and trying to beat a SC Viper.

Not to be mean but ICBC would love more this kind of drivers and force the TC to put the 15years rule to rest.:eek3:

haha dont be hatin' only takes a month to learn what i need to know? its not like im tryign to become a doctor or something..

you get behind that wheel and you put everyone on the road at risk. Leave it stock for god sake its fast already. enjoy

im probably a better driver than you...so like jus cause i dont know much about cars doesnt mean im bad at driving..haha im not leaving it stock thats for sure..ill just get it professionally tuned in a bigger city, easiest way i guess

For what it's worth, I believe that we should give 1993suprawr the benefit of the doubt. On a forum like this, through our Supra 'brotherhood' (and 'sisterhood too, where appropriate), we can share not only technical solutions, but positive coaching in other areas like driver training, honing skills through practicing on race tracks, and the best approaches to safely deal with horsepower increases. Even without us, 1993suprawr will very likely still find a way to make his already-very-capable already-modified GT sportscar even faster. If we turn him away, we'll probably loose our only opportunity to help him get on the right track. I really have seen some very young Supra owners mature extremely quickly and become very positive members of the Supra community when they were given a chance to particpate. Just my two cents.

haha yeah i like that guy haha he knows what hes talking about, i've only had the car for 2 weeks so like ppl just chill just takesa lil practice and everyoens safe around me so yeah dont worry

pwpanas wanna take a look at the car i bought YouTube - WWW.TYEEIMPORTS.COM SUPRA MK4 WALK AROUND and tell me what u think of it and if i should supe it and what not, does it look alright or like did i just waste my money :S i donno but if u could check it out would be cool, and thanx, i dont really know much of its past cause the guy that owned it was from tokyo japan but from what i can tell im pretty sure he used to drift i think:S i donno tho haha and what sort of modifications should i do first and eventually add on alot more slowly

1. WHP is wheel horsepower, compared to regular HP which is horsepower at the crank. Between the crank and the wheels is the transmission and differential, through which some horsepower is lost. Most car manufacturers quote HP at the crank, but most Supra guys use HP at the wheels. There's anywhere from a 15% to a 30% difference between the two numbers, so 600hp at the crank is a lot less than 600rwhp. I need to know which one you're shooting for before I can advise you. "super fast" really doesn't give me enough info - sorry.
2. I also need to know whether the Viper really has 520hp at the crank, or he has 520rwhp, or if he actually might have more than that and he's just stringing you (and other potential 'victim's for him) along. Many street racers will tell people they have a lot less than they really do, in order to have the advantage when race time comes, and the $ is laid down.
3. An aftermarket stereo system will definitely add some extra weight, especially if you go with big subwoofers and a fiberglass/MDF enclosure. The more weight you add, the slower it'll be. On the other hand, you can always add even more hp to the engine to compensate for the extra weight if having a great stereo is that important to you...which means a lot more total $ for the upgrades (i.e. the $ for the stereo AND the $ for the additional hp to compensate). Your choice.
4. I still need more info about what you mean by "street race". Do you mean from a dead stop, or from a roll on the highway. You need to do different things to the car depending on which you're talking about.
5. I plan to help you out as much as possible, and get you all of the info you need to do the upgrades. However, I'd ask that you please keep an open mind on everything that comes up here. The guys kind of do have a point - an upgraded Mkiv turbo can be a death-trap to even the most experienced driver. I am being totally honest with you when I say that I wouldn't even let Schumaker drive my Supra without a lot of coaching ahead of time. The guys here are really just trying to keep you alive, and keep your Supra in one piece - and I think that we can all agree that those are two very worthwhile objectives. :)

I don't know how much you paid, so I can't tell you if you wasted your $. Your Supra is beautiful though, and it looks to be in great shape.

roll on a highway yeah that works better rather than a dead stop although even say im at a red light and some guy comes up with a car and wants to race and ijust want to smoke them haha so thats what i basically meant and 600rwhp sounds good so yeah that one the viper dude bought the car for only 42,000$ so i cant imagine it being somethign outrageously amazing..but im pretty sure 520 at the crank

600rwhp is A LOT, close to 700 at the crank. I really, really dont think that would be too fun to drive if it is your daily driver. Different mods will make it more 'drivable' than others. definitely important if you drive this thing to work or something.

You'll need a pretty big budget for 600rwhp. This means a fuel system upgrade and a full single turbo upgrade. You'll likely also need wider rims & rubber to make sure that the power can be put to good use. Add in installation costs, the fact that you want it to continue to look great, tuning costs, some track time, race fuel, etc. and I'd say at least $15000 USD is a budget that could get you into the ballpark of what you're looking for. Please let me know if that's a completely unrealistic figure for your budget, and we'll scale back the rwhp until it fits with your budget. If that's not a problem, we'll start getting into the specifics.

haha yeah its daily drive and yeah dont work ne more lol just enjoying my car i paid 24,880$ for it i wish i had a list of the aftermarket mods but the guy didnt give me any things i could check and find otu what kind of suspesion, exhaust intercooler and stuff i have and let uknow and yeah 700 is too much haha i just want it to be faster even tho its super fast now cause eventually im gonna put on a top secret wide body kit and like a bunch of new things but i just bought it like a week or somethign ago haha got my first speeding ticket today too haha but i just want it to be a lil faster its so annoying when muscle cars come up to you and think there all good i've smoked every car i raced so far but i just like having more speed

no thats lower than i expected actually thats very realistic but thats just the engine mods and stuff im gonna need alot more for the interior and everything i dont have any gauges and stuff int here just a turbo timer theres a ecu system or whatever and stuff haha not really sure of what that is i never liked cars until i saw a supra and i just fell in love so now im startign to like them alot more and want to learn more in depth

no offense, but if your getting speeding tickets your probably doing something wrong. if you must, get a radar detector. but find a local track that you can drive at, you would probably enjoy it.

yeah tahts true i gotta get a radar and stuff soon enough like i asid i just bought it and im just slowly progressing from here its only goign to get better and also my speedometer only reads 180km/h? but im 100% sure it goes way faster than that i gotta get that all upgraded as well

you sure it isnt 180mph? i think thats what the speedos go to

naw it says 180km/h and i know im going the right speed cause of other cars next to me so yeah it might be a stock one from japan pretty sure

This is my last post on this thread. Sorry to the OP that I am off topic. I can Phil can fill you in much better than I do.

It's 180km for sure because it's a JDM. Actually, that's all it has, unlike the USDM and CDM models.

Phil, I do respect you, lots as a matter of fact. You try to help and give advice as much possible as you can. That's a perfect Mod. However, what I disagree with 1993suprawr is posting up to get advice on how to modify his car for street racing. Since street racing is illegal, I don't think any forum should accept that (street racing).

1993suprawr, I do respect your honesty too by coming here asking for advice to modify your car as daily driver and street racer. Take care of yourself and the others that share the road with you, your Supra and the Viper. Hope you learn and turn out to be "ok".

mnewxv: BINGO! Well said.

peace

haha hmm okay then? well im just asking for help but if thats too much cause i want to race? then i guess i can just go to shops and ask around..but okay then

and yeah street racing is illegal so are half the other things in this world but u dont see people stoping do you? and im sure you do some illegal things as well even if its just smoking pot or goign above the speed limit by 10km's the fact is u cant stop everything and by saying i shouldnt be able to get advice off a supra forum is pretty stupid as well but i guess u have ur opinion i have mine as do others

i agree with u too.. even i street racing.. always wanted a fast car.. same age as u but my mk4 is 850hp yes its fun to drive fast and race/kill any car on the street but make sure u know wut u doin or where u race not in stupid resident area but do it on highway or something thats my advice to u

but yeah if u want it fast.. upgrade to single/injectors/ecu/manifold/n blahblah n make sure its tuned:dance:

why don't we focus around making the car faster than a debate about street racing. It is illegal and dangerous, but I will give you the benefit of the doubt and assume if you do, you will do it on roads with few to no cars present when you race and that the only life you put at risk is your own.

Now, RWHP is one thing, but what exactly do you want the car to do? What 1/4mile time, or whatever distance term they use there, do you want to achieve? 0-60mph(0-100kph) times? Those are both influenced greatly by the driver's ability to handle power and launch well. If you want bragging rights than saying like 450rwhp is quite a lot, probably 500-525hp or so at the crank. 600rwhp might make you win the race after the tires hook up, but being able to launch the car perfectly with 450rwhp is more impressive in my opinion. Also, if you do not have a limited slip diff, you should get one. As for tires, for 450-600rwhp I would suggest no smaller than 285 rears, prefferably 305-335mm wide. fronts 245 or 255 I guess. I like the top secret body kit.

yeah i've got lim slip differential, and yeah even 525hp is fine its basically for just highway rolls and like red lights and stuff not really gonna go street race for money and stuff just want it to be fast..and i wont be putting ppl at risk dont worry im mature enough to know the difference, i just want to know what upgrades i should do first and slowly add on what would u recommend doign first

First is BPU. Please read about it here:
MKIV.Com Home of the MKIV Toyota Supra

In short, BPU means a downpipe, a BCC, a boost controller, and a boost gauge. If your Supra isn't full BPU yet, you need to get it there. I know you have other mods like an fmic and an aftermarket air intake, but we need to start with the basics.

In addition to BPU, make sure your Supra is up to spec on all of the maintenance that is required in the owner's manual (and/or TSRM), based on the mileage.


Lastly, I still need ALL of these questions I asked answered:
http://www.toyota-supra.info/forums/mkiv-supra/12315-just-bought-1993-mkiv-twin-turbo-need-help.html#post63584

Agreed....but:
1) We don't know those races didn't take place on a track or an abandoned airstrip, etc. Either way, the best course of action here is not to keep digging into it. Personally, I really don't want to know - it doesn't help the discussion here at all. Again, I agree that if street racing is specifically mentioned as a venue, then this forum does have to come out strongly against it.
2) We have one opportunity here to influence 1993suprawr here, and we'll loose that opportunity if we turn him away and refuse to work with him at all. Like I said, we want to help him safely modify his Supra, and then if he wants to compete with it, we can encourage him and the guy who owns the viper to do it at a local track, with fire trucks and ambulances waiting, and no spectators along the side of the road to get schmushed.

Long story short, officially street racing is a bad thing. Beyond that, the less it is discussed, the better. As a request to everyone on this thread, let's drop that part of the discussion.

Agreed these will all ultimately be required for 600rwhp+. However, the build needs to take place one step at a time. We really don't even know all of the mods that we're working with on this car yet...so we can't really build on top of an unknown starting point...

pics of the engine bay and bottom of car would be helpful in helping you tell you what mods you have.

gramlights/falkens
strut tower bar
catback
hks suction intake
earthing kit(grounding)
intercooler/upgraded turbo piping, if not upgraded turbo(s)
possibly coil overs?
body kit + wing
recaro seat
blue gauges, carbon fibre dash, A/V, etc
possibly short throw shifter
either a turbo timer or boost controller(hope it isnt a boost controller if you dont have a turbo timer as well!)
steering wheel

the brakes appear STOCK. trust me, if you want to go fast you NEED the parts that will slow it down as well. The stock brakes are excellent, but I wouldnt want to be using stock to slow down from 180km/h or higher!

okay i will take pictures of the engine and the underside and then ill post them on here or whatever and then u guys can work from there, thanx

aragosta suspension system, regu exhaust system..umm i donno what else haha and yeah its a turbo timer

and also what does the turbo timer do... im not really surei have it set for 2mins and 30 seconds tho whats its purpose?

its so when you turn off the ignition, the engine will run for 2.5 minutes after you take the key out. that way, the engine(particularly the turbo) can idle for a few minutes to cool down, essential if it was being driven hard. Otherwise, the oil in the turbo would stop circulating, be trapped in the hot turbo and burn, turning into some gunk not good for anything.

I am very interested in becoming a supra owner as well and I was looking at the site you purchased your supra off OP. Being that yours is also prolly right hand drive do you plan to convert anything over? Is this affordable anyone? Ive never looked into buying a right hand drive car and converted it to american standards including all the gauges and what not

i like rhd im just gonna keep it likke that just supei t up more, and is there an ideal time to set my turbo timer after just a normal like drive?

also i was wondering what type of engine oil would u guys prefer thati used a name and brand would be good cause i gotta go buy some cause its pretty low thanx hopefully someone can answer me really soon

Turbo timers arent really there for normal drives. Its more of a convienence item. Meaning if you had it turned off or didnt even have it on and you just went for a cruise and didnt really play hard then you could just park the car and turn it right off. (the car is going to be its hottest idling)

Now where the turbo timer comes in...if you play a little hard and you dont wanna drive around at a cruise speed to help cool things down it will idle for a bit and cool it down a little more. Even tho a car is going to be its hottest idling its still better to idle for a few before turning it off but its even better that if you know your destination is like 5 miles away dont rip ass through the parking lot or up the street and then just try and turn it off lol.

I just wanted to answer your post the best I can but also explain things as well. I think an ok turbo timer setting would be for 45 seconds. I dont think thats too short or too long.

i say one minute :x: 45s might be just a tad short if it was a street race or series of races. 60s is doable its not THAT long