alwayssideways

after my little project that i think i spent less than 100 dollars for description listed here https://www.rx7club.com/2nd-generation-specific-1986-1992-17/after-2-weeks-t2-up-running-about-5-psi-more-boost-358915/. I went from 174.6 hps to 237.6 hps in 3rd gear and from 157.2 for torque to 224.2. needless to say i was only expecting about 200. when the guy ripped my car tha first time and i saw that graph my jaw dropped. i was fully expecting my car to blow up. On the way to the dyno this morning i was messing around and seeing what the car could do ( i drive it about 2 times a week at most) and i was watching the boost gauge . well it was creeping up to about 15 psi before the waste gate was catching it. the only thing i left out of the description is a custom TID. untill i had changed it i was only getting a max boost of 10psi. And now for some reason it will creep up to 15. so i was worried i would lean out the engine . but i asked the guy to monitor it . well it never really dipped into dangerous A/f's only in one point. but i have a walpro waiting to go in (should have done it yesterday) and a safc and boost controller soon to be ordered. but needless to say i pretty excited on what i pulled. the only other 7 he tested that pulled close to me was a 3rd gen at 235. But now i have some number to go by from here to know where i stand .

noman17

ohh hey wasup,, nice numberss man, which dyno u goto any form of tuning?
your frm hartford, do u know jay lambert he drives a cougar??, well i live in bristol too along with him, and he mentioned a friend in hartford with a turbo2??, wunder if i met u b4 i had a 87 supra...,
all thats changed to a rx7 now =)

eriksseven

iTrader: (6)

wow, good stuff

alwayssideways

yeah dude i know jay infact he was there when i ripped her today. and yeah i think i met you before.. you ever remember a blue cougar that was decked out ?? if so that was me .. i know that he knows like 2 or 3 people with turbo supras. i guess someone he knew has one that was all decked out and i guess no one had a setup like his and he was having problems getting some stuff worked out with it. but thats the last i heard about it . and that some one wanted to race me with their supra vs my 7. but that was when i had my NA . but yeah i know Jay , hehehehhe

And i do most of my stuff at bristol dyno. I will be doing some tuning fairly soon there. possibly in like 2-3 weeks once my safc comes in. but you got a 7 now?? what happened to the supra???

noman17

oh thats cool i've been there bunch of times, tuning different stuff,,
oh he was prob talkin bout steve in the white mk3,,,
hmm u got like an aftermarket hood on your cougar right, i think i remember,
oh i dunno just wanted a different car, , yea my 7 wont be running till next yr, its a 91 n/a just yanked the motor out today, doing a 13b-re on it

dr.jones63

Your on borrowed time at 15 psi boost for a number of reasons.

1. Your intake temp will be too high
2. A ACVR won't help lower your boost. It will spool faster
3. If you have a FCD it "clips" the signal from the pressure sensor which means that the ECU stops compensating your ignition timing.
4. That's exactly how I blew my first motor. Even though it will run great for a while.
5. Just because the guy at the dyno says it safe doesn't mean he will pay to rebuild your engine.

I would get a Rtek ecu upgrade and port your wastegate more to the point of needing a new flapper valve.

alwayssideways

interesting .. ill have to check this out

alwayssideways

where would be a good place to buy 720cc injectors?? after eading the r-tek site. i think im going to do the 1.7 chip. and with that version chip you need to have 720 secondaries. so any good place to buy them ??

dr.jones63

Check http://www.rx7store.net/index.asp?Pa...S&Category=261

dr.jones63

Actually my 87 T2 is very similar to yours except I still ave a air contoll valve and Im running 10 psi. I blew up my 89 T2 with 15 psi of boost. That was a good excuse to rebuild it. Anyway, if I wanted to make a 15 psi run at the track I would run race gas and cooler spark plugs. Things that would also help are a FMIC or water injection. The problem is like a diesel engine that has no spark plugs you can detonate gas before the spark. As your engine compresses the air/fuel charge heat is created. If enuff heat is created it detonates with no spark. Running lean makes heat. Exceeding the design effiency of your stock turbo makes heat.