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Old 12-19-2006, 05:38 AM   #1
supraboy380
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i don't really know how to set up a race or anything like that, so if someone could tell me that would be great, but these races below were kinda already set up, they were friends that told me to meet them somewhere, but i don't know how to race just random cars i see on the road

90 supra vs newer rx 8 .... won (even with a low cut out)
90 supra vs riced out crx..... smoked (even with a low cut out)

this kid at my school just got a 90 ish honda civic turbocharged, it has a stock engine but is running 18psi, i don't know if i should ask him or not, what do you guys think? my car has 3 inch piping, a turbonetics ceramic ballbearing t3 turbo, rebuilt injectors, rebuilt top end, greddy blow off valve, but am only running 10 psi
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Old 12-19-2006, 02:05 PM   #2
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What is done to your car? It must be fast to have beat an rx8. And i severly doubt he has a stock motor or is running 18 psi. Id say race him him. Honda guys do love to over exhaggerate.
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Old 12-20-2006, 05:25 AM   #3
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Yea 18 psi is the upper limit with pump gas on an actual turbo motor for a 7MGTE. No way a NA motor will live at 18 psi for long on pump gas.

His 18 psi has to be on race gas or some other means of eliminating/limiting detonation, or he is lying about a stock motor. If he actually has 18 psi, he will beat you but a bad day racing is better than....
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Old 12-20-2006, 05:53 AM   #4
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i didn't hear it directly from him, but thats what has been going around school, umm ya it was my dads car before mine, so he did most of the modifications to it, but all i know is what i typed earlier, but it pisses me off cause i can't get it revved above 6000 rpm without it hitting cut off, do you know what is causing that, can you help me out? im getting a new fuel pump cause thats what my dad says is wrong with it is that its not getting enough fuel to the engine, but idk
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Old 12-20-2006, 02:30 PM   #5
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No you are probably hitting fuel cut. Toyota has a preset value (that can be fooled with an HKS "FCD" Fuel Cut Defencer) and thats what you are hitting(probably) it usually takes over 16 psi or more to activate this. It is a saftey Totota built into the fuel injection. I have a big t4 and it took 16+ psi to hit mine with a Lexus airflow meter and stock injectors. You should first buy a Wide Band O2 sensor. You will always own it and you cant possibly make an intelligent decision about tuning without it. What Im saying is everything you change to try to get a better tune WILL be a guess without a WB. It seems like a lot of money for someting that dosent make your car faster but you can not make safe tuning decisions without it.

Your dad is wrong about the fuel pump causing your problem. You need an FCD but you shouldnt get one until you have a WB installed first. Read this when you thuroghly understand it then read this last paragraph it will make more sence.

I never installed 550's and the lexus AFM worked great with no fuel cut up to 16~17 psi. My Air fuel ratios (AFR's) were perfect and I was safe to go above 17 after a walbro fuel pump, and water/methanol injection. What im saying is you will be safe to go up above 10 psi with an FCD but only if you have a WB and KNOW what your AFR"s are. You will probably only be safe to 16 psi but dont do it until you KNOW your AFR's.

The FCD isnt the devil Reg makes it out to be as long as you know your AFR's. That article is kind of dated, if you notice he dosent mention "If you have a WB you can make edcuated decisions!!!" Go ahead and start a thread to ask more questions about this and we will not hyjack this guys thread.
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Old 12-21-2006, 06:58 AM   #6
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That and its pretty pointless to go that high anyway. Remember this is a straight 6 with a very long and heavy crank, not a 4 cylinder. Your making all of your power at or before 6000 anyway. And yes i doubt the fuel pump is bad, either your hitting fuel cut off or something of the like. The car would die before 6k if the fuel pump was bad.
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Old 01-04-2007, 03:47 AM   #7
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pwned a police car that pulled a uturn to pullme over. i downshifted into second and flew down the street to my school entrance, headed straight to the ack lot going about 50 and made it into school on time. my friends liek dude u just ran from the fuckin cops. lol it was good stuff
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