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The two main drawbacks of using the bolt-on turbos is the poor flowing stock exhaust manifold and use of an internal wastegate. If you ever want to go for more power those two items will cost you horsepower and boost control. I went form a: -CT-26 upgrade-Very fast spool, but no topend...

I put down 451rwhp at 20.5psi with the bolt-on SP61GT. One of my favorite turbos-15psi by 3300rpm's in 4th gear.

I wish the AEM had that/\.

Thanx for the info/\

I have one and it works great.. I can't imagine having the targa off anymore without the brace on. I have a corvette now with a targa, so I'm selling mine in perfect condition..

The way I look at it for the supra is how much power you can make on pump gas while not having a laggy setup. I don't know about you all, but daily driving a car with $10 dollar per gallon gas is no fun for me.. Yeah you can have a very big turbo and maybe get 600rwhp on 93 octane with a nice...

It's kind of up to you. Bumping it up 1/2 a point or down is not going to make a huge difference. For me personally, I like to get as much off-boost response as I can while trying not to cause too much knock on pump gas. If you are more concerned about knock then leave it 8.4-8.5. Going from the...

I thoroughly ported my stock ex manifold years ago before they had all the inexpensive ebay manifolds and so many used manifolds. I could feel a little difference with my SP61GT; Felt like it pulled a bit harder in the high RPM and lost a little spool in the low end. With that said, to me it is...

Turbo cars are meant to have lower compression, not low compression. Rarely do you see newer turbo cars running lower that 9.0 compression. Cars that had 7.5-8.5:1 compression ratios are mainly from the 80's where lack of knock control and unsophisticated engine management where the norm. Cars...

I tried mounting my AEM box in the stock location but it's too big. Mine fits up there, but the glovebox won't fit now. Maybe I'm not trying hard enouogh..

"Man plays Russian rulett (sp) and lives.." What are you talking about?????? I'm tuned with an AEM. Can you say "timing control". I don't care what compression you run, with the stock ECU and the crazy high timing you get, you are at more risk for knock no matter what. GO ahead and run 7.5...

I did, to about 9.0. And I'm still making close to 500rwhp on pump gas. You probably won't see a noticable difference in power or spool-up, but you will have a little bit better off-boost response.

Nice numbers for a CT-26 upgrade. Running race gas or pump gas? How do you like the MAFT-PRO?

Should be able to hit 14-15psi at abut 3300 rpm's in 4th gear. Or about 3800-4000 rpms in second gear. That's with the EVC hooked up. If it's boosting much slower than that, you have a problem. I never had to port anything on my SP61GT, although I did have to put a bend in the actuator arm so it...

I had the money to buy an MK4 cash. So I went out and did the smart thing and picked up a 2 year old C6 corvette. Kind of nice having a 12 second car that needs nothing.

The first thing I noticed after installing the 264 cams is how the off-boost power got softer. But there is no decrease in boost response or "lag". Topend is nice. I have my limiter set to 7200rpms and it pulls very hard all the way through. I can't imagine using these cams with the stock rev...

I have the BC 264 cams. I had to return my first pair.-Car wouldn't idle at all, and of coarse Brian Crower said they were fine. The second set he sent me worked great. I'm making just under 500rwhp at 17psi with conservative timing with a little GT35R.

You'll probably be in the low 400rwhp range at 18psi, if your motor's healthy. With a lot more potential with race gas and high boost.

What are you using for engine management? If you are just running 11psi with the stock AFM, then you will probably not notice much difference. Turn up the boost and you will see a huge difference in both turbos. Turn up the boost very high and your car will be a beast with the 61.

/\I will find out for sure once I get my head off.-But I have Brian Crower springs, so I wouldn't doubt it. Nice list BTW.