Originally Posted by KILLER-LS1

Well, I have some interesting results, and here they are:

first pull of the day made (stage 1) 828rwhp at 11.5 psi!!

next pull (stage 2) was 955 rwhp on 15.5 psi

playing with the boost controller got it to 977 around the same psi

then another pull to 1025.8 rwhp, and then 1027.4, both at 16 psi.

we were pretty much done, so we let it cool down for a few, and then decided to test back pressure, pre-intercooler pressure, and manifold pressure all simultaneously.

Heres the crazy thing: it made 23psi back pressure, 15.5psi manifold pressure, and 30 psi pre-intercooler!!

needless to say, i have a small intercooler restriction LOL. its still a 3" core ebay intercooler, and I never thought to replace it because the car always had good power. Funny thing is, the IAT still dropped to 68 degrees.

amazingly, since the motor wasnt so hot, it made 1014rwhp on 15.5 psi!


Im going to get a good intercooler in there, (need some opinions on size and type) and re-dyno it after, we think it should pick up a LOT of HP.





To those that questioned the pre-intercooler psi, thank you, im glad I checked it. That means my backpressure results have been skewed because of this intercooler restriction. And here is my official apology to Comp Turbo. Sorry guys, i hope i didnt make your turbos look bad, I am VERY impressed with my current turbo, and hope that others have the same luck that Im having!


http://youtu.be/hrIKxSxE20k

Originally Posted by stevieturbo

I dont recall reading he was interested in street racing ?

Originally Posted by stevieturbo

I dont recall reading he was interested in street racing ?

Auto's have their place, and for short straight line stuff or launches there is no doubt they are better than a manual. Not everyone wants an automatic though.
If they did, Rally cars, Race cars, F1 cars, motorbikes etc etc would all use automatics. None do.

Originally Posted by Cam72aro

A F1 car doesnt use a full manual trans buddy. More like smg, which is computer shifted, not the conventional clutch and shifter. What do you mean race cars? Nobody said he was street racing, but put the two cars next to each other and the auto car will keep boost throughout the rpm range and run circles around a manual car any day.

Originally Posted by stevieturbo

F1 cars are not computer shifted ( and I doubt they would be allowed to, or the driver would even want them to be ). The driver chooses when and where to shift the same as any sequential gearbox whether H pattern or other shift mechanism.

Auto's are great for short straight line stuff where launches are critical and a lot of situations on the street.

But not everyone wants or needs an auto, nor are they the best option for cars that are used regularly on a variety of roads, and for different types of racing if it also gets used for that.
I dont think there are any proper sports or performance cars with an automatic gearbox anywhere outside of the US ?
The fascination with automatics does mostly seem to be an American thing.

Originally Posted by deeloc1

We're gonna lose this very informative thread...we're getting way off topic...lol! We went from Comp vs Garrett to Auto vs Manual and freakin' F1 cars...lol! Let try to keep the thread alive until he throws a better intercooler on there. KILLER LS1, any time table on when you might get your new intercooler and when we might see some new results?

Originally Posted by KILLER-LS1

I'm out of town again for the PWA conference, so it won't be for another couple of weeks. I work a lot of races and shows in october, Then I'm gone for SEMA in November, and a 1/2 mile drag race right after that, so the plan is to have it all done by the end of September.

Originally Posted by deeloc1

We're gonna lose this very informative thread...we're getting way off topic...lol! We went from Comp vs Garrett to Auto vs Manual and freakin' F1 cars...lol! Let's try to keep the thread alive until he throws a better intercooler on there. KILLER LS1, any time table on when you might get your new intercooler and when we might see some new results?

Originally Posted by KILLER-LS1

Guys, I'm not putting an automatic in this car. EVER. The end. I'm not trying to be the fastest street racer. I'm trying to build the most versatile street car possible. I can get 20+ mpg, go autocross, road race, run 200+ MPH, take it to the 1/4 track, take it to car shows and win awards, take it to the grocery store, take it on road trips, and still be faster than 99.9% of the cars on the road.

Originally Posted by TPI TERROR

getting your car ready for SEMA?

Originally Posted by nocooler

Martin - did you miss the pre-intercooler boost was 30psi? That compressor is working way harder than it should @ 15-16psi.

Hell I don't think 23psi of BP with 30psi of compressor boost is bad at all.

I'd like to see what is does with a better intercooler. You think it spools fast now wait until you don't have a 15psi drop across the core. The back pressure should come more inline as well.

Originally Posted by KILLER-LS1

Answers in bold

Originally Posted by AutomagicLS1

nice numbers but your using a 6 speed there chief and also my car made 1000rwhp @ 20lbs 16* using a th400 through a 9" at TX2K12 also using a tiny *** 92mm exhaust wheel on my 408 compared to your monster gt55 wheel. that little demon only set me back $1249. your car makes power no doubt but i'll bet you anything its gonna get worked over hard by a auto car on the street making a lot less power than you are...so comparing your 6 speed car to my car auto car really doesn't make a difference to me

http://www.youtube.com/watch?v=okexhAh6Znc

Originally Posted by Martin@Tick

No I didn't miss that I haven't said once that the back pressure numbers are bad, I'm trying point out his MUCH larger new turbo is making the SAME horsepower his GT91 did!

LOL upset? I'm far from upset just trying to take the blinders off for you. Automagic and LS1 curt both answered for me, you're comparing a unlocked stalled auto to a 6 speed car. 1000rwhp at 20lbs on 16* timing through an auto would be 1100+ on a 6 speed. And there is NO way you're picking up 100rwhp with 2psi of boost. It ain't happening. No offense here at all, but I think I know a little bit more about turbo's than you think and that I let on. Jose has shared a lot of information with me and some of it is stunning to say the least. I watch cars make pulls on the dyno all day long and the higher the hp the larger the differences in power output comparing an automatic to a manual trans. 50rwhp difference between the two....again there is no way that is going to be the case.




Thanks for chiming in, wasn't trying to get you drawn into this discussion just using you for an example as I would guarantee your car with a 6 speed and the old GT88 would make the exact same numbers he is making if not more.

Originally Posted by JOHNBOY66

At the power level your at and wanting to run air to air you should really look to talk to koolrayz about the air to air he ran built by Ron Shearer.

I am sticking to my guns on the you still could use a larger turbine wheel. Your asking a lot from that to drive that 133MM exducer compressor.