1991 supra turbo

Supra_01 · 04-18-2007, 04:41 AM

I just got a 1991 turbo supra and it has the upgraded cam and i was wondering how to get a bit more power outta it.

88Tsupra · 04-18-2007, 04:56 AM

do the simple thing and check your HG first make sure its good..if you want more power and your HG is safe go with the typical thing and 3inch exhuast, air intake system, downpipe, buh i suggest making sure you make sure everything runs perfectly

i did that i did the typical exhuast and intake..but now i stopped and now im saving up for a full engine rebuild so that HG doesnt kick me in the balls then Btch slap me later on

Supra_01 · 04-18-2007, 05:04 AM

Ya i check with the guy i got to install it and he said it was a good one, and how much could more boost could my engine take i belive it's 6.8 stock.

west_side_supra · 04-18-2007, 08:00 AM

well thats where issues start to kick in, if you want boost and you have the stock turbo, im not 100% sure on this one, but it is said to be the most reliable way of turning it up. is shimming the waste-gate mmm put 3-4 washers on the waste-gate aculator and tada you will go from the stock boost to about 9-11psi depending on the amount of washers you place in there, this is said to be the "cheap mans boost controler" but it works.

the stock turbo can handle 15psi dont know how reliable it is at that but i know thats what it can handle. im doing 10-11psi every day and havnt had any issues with it.

if you want to go past the, well its a random number but between 12-15psi range your going to have to get a FCD from HKS "fuel cut deffender" and also upgrade your fuel system. injectors,pump,fuel pressure regulator,ect... that way you can have more than what the cars gas can handle. once you have hit a certain point of boost your car will hit what is called fuel cut and thats just you engine saying i dont have enough gas to handle the amount of air your giving me and it will temporarly shut off and feel like you hit a brick wall. from what i know its doesnt cause damage to the engine its just another gay saftey thing toyota wanted to put in the car. also you will need a boost controller, and a bigger turbo. and also the good ol HKS metal HG will be needed to to handle that without blowin it.

the question i have is how much boost can the car handle? if there is a limit. i mean its gotta blow under pressure some time, im guessin 25-30psi is max that would be safe. 40psi if you get there some how would probably be pushin its limits and good for just track use.

mrnickleye · 04-18-2007, 02:21 PM

Read this.....
http://www.toyota-supra.info/forums/mkiii-faq/50-steps-to-modifying-your-mk3-supra.html

04-18-2007, 04:41 AM	#1
Supra_01 Stock Join Date: Apr 2007 Location: Canada Posts: 2	1991 supra turbo I just got a 1991 turbo supra and it has the upgraded cam and i was wondering how to get a bit more power outta it.

04-18-2007, 04:56 AM	#2
88Tsupra 12psi boost Join Date: Jan 2007 Location: long beach, CA Posts: 252	do the simple thing and check your HG first make sure its good..if you want more power and your HG is safe go with the typical thing and 3inch exhuast, air intake system, downpipe, buh i suggest making sure you make sure everything runs perfectly i did that i did the typical exhuast and intake..but now i stopped and now im saving up for a full engine rebuild so that HG doesnt kick me in the balls then Btch slap me later on __________________ 88turbo targa-white original Pin Stripe custom intake-Tenzo filter.....Momo racing seats and steering wheel... apexi exhaust tip-custom 3" piping. Replaced with RSR GT II NGK plug and wires HID conversion head lights HKS Turbo Timer Type-1 (in black) Tial BOV BIC DDP

04-18-2007, 08:00 AM	#4
west_side_supra 12psi boost Join Date: Sep 2006 Location: Marysville Washington Posts: 353	well thats where issues start to kick in, if you want boost and you have the stock turbo, im not 100% sure on this one, but it is said to be the most reliable way of turning it up. is shimming the waste-gate mmm put 3-4 washers on the waste-gate aculator and tada you will go from the stock boost to about 9-11psi depending on the amount of washers you place in there, this is said to be the "cheap mans boost controler" but it works. the stock turbo can handle 15psi dont know how reliable it is at that but i know thats what it can handle. im doing 10-11psi every day and havnt had any issues with it. if you want to go past the, well its a random number but between 12-15psi range your going to have to get a FCD from HKS "fuel cut deffender" and also upgrade your fuel system. injectors,pump,fuel pressure regulator,ect... that way you can have more than what the cars gas can handle. once you have hit a certain point of boost your car will hit what is called fuel cut and thats just you engine saying i dont have enough gas to handle the amount of air your giving me and it will temporarly shut off and feel like you hit a brick wall. from what i know its doesnt cause damage to the engine its just another gay saftey thing toyota wanted to put in the car. also you will need a boost controller, and a bigger turbo. and also the good ol HKS metal HG will be needed to to handle that without blowin it. the question i have is how much boost can the car handle? if there is a limit. i mean its gotta blow under pressure some time, im guessin 25-30psi is max that would be safe. 40psi if you get there some how would probably be pushin its limits and good for just track use. __________________ 7MGTE - 500hp never dyno'd exhaust: 3inch pipes no cat/powerhouse manifold/garret gt47 18psi/HKS SS racing wastegate fidenza cam gears intake: PHR 4inch intake/K&N filter/3 inch intercooler/ pipeFMIC/greddy type R bov/ fuel: 550cc PTE/ walbro 255lp / Aeromotive adj pressure regulator transmission: Fidenza flywheel/ACT extreme kit electronics: map ecu 1 / HKS EVC 9 gauges:boost,EGT,oil temp & pressure/aem AFR

04-18-2007, 02:21 PM	#5
mrnickleye 1000whp postwhore Join Date: Jun 2005 Location: Mojave Desert, Calif. Posts: 1,705	Read this..... http://www.toyota-supra.info/forums/mkiii-faq/50-steps-to-modifying-your-mk3-supra.html __________________ Had a Red 1989 N/A. Automatic. Sports Pkg. w/wing. TEMS, and some nice MODS. Sold to a friend 10/08/08.

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04-18-2007, 05:04 AM	#3
Supra_01 Stock Join Date: Apr 2007 Location: Canada Posts: 2	Ya i check with the guy i got to install it and he said it was a good one, and how much could more boost could my engine take i belive it's 6.8 stock.