If you took all of the thousands of turbos that I have sold for supras in the past 21 years and averaged it out...... .81 would be by far the most popular turbine housing for the 3.0. It would be a great choice too for the VQ although with the added displacement and variable valve timing etc I would not be afraid to suggest a .96. Depends on the application and where the person lives etc. If it is daily driving in traffic.... then .81 for all means. If you live in New Mexico and do all highway pulls, then .96.

 

Here is an example of back to back pulls going from pump gas to E85. Nothing else is changed, same boost level etc. ProEFI does all the rest by the flex sensor. 74 mm turbo on a supra.

 

/\/\/\

Motors LOVE timing!!!

 

And the 30% additional fuel helps a ton also with spool. All street turbo cars should run on E85 !!

 

Are you trying to imply something Larry????? lol

Tom

 

Isn't the race gas getting expensive??

 

Only had it in 1.5 times......1 time out, and 1 time on dyno....

655rwhp VQ pumpgas power seems to be enough even for the cornfed supra's!!!!!! Well at least so far lol.

Tom

 

Great info here.. maybe on my setup ill run the 62 with the 1.0 a/r housing and the quick spool valve..on e85 and see what it does. that should put out good numbers with great spool time

 

you have a 6262 so your spool won't suffer enough to need a quick spool. You're full boost down low 3000's as it is. Going up 1 size in the turbine housing will probably put you full spool in the upper 3000's so i wouldn't worry about it.

Thanks for the info larry.

 

who did the heads? hogged out heads dont make good heads. I know your buddy mentioned how big the ports looks. That can KILL!! driveability and cause all sorts of tuning issues.

FWIW

 

autobahn racing in texas did them.

You make a good point but the thing that really closes that hole is the fact that in may when i had this engine, vortech, cjm stage 0 return, and dw 800 injectors this car ran perfect. Hal had it driving better than stock. It was so smooth on the throttle and no lean tip in or jerkiness.

It started when i did nothing but change to the hks 1000cc injectors. I assumed it was my tuning but maybe it's not. Is there a chance these injectors are dirty rich? The injectors are the only thing that keeps rolling into my head because no matter how much transient enrichment i throw at it whenever i get off the gas then barely tap on the gas it jerks and goes lean. I also sometimes get a 12:1 blip when i'm just cruising without changing the throttle.

Anyone have any injectors i could use to try out and see if it's my injectors? I'm really at a loss here at what is going wrong and i don't have the funds to throw hundreds of dollars out on all new stuff just to "see" if it is the problem.

rich, with those pte 1200's, did you have to have that intake spacer to make them fit? Since those pte's are pretty cheap i'm thinking about using them but that 100$ spacer adds the cost back up to some dw 800's again.

 

My car ran the same with both the pte and the hks. Ya u need the plenum spacer to use the ptes.
What year is your car? That other guy chased injectors, but unless its a global problem, that's not the issue.

 

It's an 03. I know you're going to say haltech issue but since day 1 i've always had a silver haltech with 1.06 on it. That was what ran before and nothing with it has changed. Raj already emailed me and told me about the version 1.00 and other issues someone has previously had with them and i remember you having issues and going back to version 1.

Since mine worked before, I don't think a firmware change to an older version would make a difference unless it has something to do with the firmware and low impedance injectors because my last ones were high impedance dw800's.

 

man i didnt know injectors can give such a headaque.

 

i wouldn't think so either but i haven't done any swaps to sent them out for testing yet.

I think it's not common for them to be this troublesome but i'm actually hoping it is them because that's a simple fix for me. If it's not then i'm not sure i have the energy to track down what is going funky with this car. Stock engine might find its way back in there so i can just drive the car without worrying.

 

what's the latest???

 

so whats the deal with this?

 

I called and talked to hal some more because i'm certain i didn't do anything wrong to it. i had the map sensor installed and wired before i went down to tune it again so the car was wired for 2 months before the unit failed. If i wired it incorrectly then it should have failed sooner than that due to the map sensor.

After talking to Hal he ended up calling Haltech again and getting warranty approved. I'm not sure how he managed it but he did so i've very thankful of that. This is a true warranty item. Random failure of part with no reason for damage.

The only downside is there is 0 haltech's in stock so i'm not sure when i'll be getting my new unit. Hal will be checking on that this week for me. Hopefully before snow hits the ground so I can get my car down to have the tune finished.

Before it failed i put hte .82 a/r housing on and it was slightly quicker but since the flow was better i decided i could take it up higher in boost. Hal said he set timing to a safe level up to 17psi so i bumped it up to 16psi and took it for a street drive. It was nuts. I was greatly impressed with the gains of 2psi. We were getting about 20hp per psi on the dyno so if that held true i was pulling another 40ish hp. Can't wait to do e85 or race gas and crank that boost up.

 

Sup Jeff, just got back from Aruba but it's good to hear some good news about the Haltech warranty. The car sounds like a blast with the .82a/r...I can't image how it would be like once u up the a/r and the boost.

 

glad to hear you got your haltech worked out.