Newb FI question

Boosted Performance

The car made 550whp even, and please note that the actual boost pressure at max HP is about 9psi (10psi at 6,000rpm and falling). The reason the boost is up in the early rpms was due to having a manual boost controller. Because it is a manual boost controller, there was no way to controll boost in the upper rpm's (like haveing an EBC and the option to increase the duty cycle). So it was turned up so that we can be as close to 10psi as possible at max power. As a result the boost was up to 12psi at 4500rpm.





The reason I say the 2.5" dual will make a lot of power is because of that graph. There is no sighn of it tapering off. It is just a nice linear line, with no dips, and no falling off at the top.

This is a Boosted Performance single, twin scroll turbo with a Precision 6266 billet T4 1.0 a/r. 3" down pipe to a Y-pipe going to the F.I dual 2.5" exhaust system with 14" resonators.

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theDreamer

Did you stop at 7k RPMs? Because after there is a drop off.

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Boosted Performance

This would be a result of pulling timing, falling boost and flow limitation of the 1.0 a/r turbine housing...nothing to do with post turbo turbo exhaust.

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Mr.Squeeze

Sound's like the 6266 is comarable to the GTM stage 2 that's real nice.

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Driven Motorsports Single Turbo 7675 T4 1.32 A/R 995WHP 780TQ

Boosted Performance

Yup, maybe even a bit more power because you can go up to a 1.32 a/r housing with the 6266. These egnines breathe so well, and rev very high....turbine housing size is key.

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Mr.Squeeze

That's even more impressive, I learned the hard way housing size on my build not looking forward to swapping mine.

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Driven Motorsports Single Turbo 7675 T4 1.32 A/R 995WHP 780TQ

Boosted Performance

I think I remember posting in your build thread something along those lines, and somebody saying that upgrading to a dual 3" will make a world of difference. I can't remember now but I think you only made another 30whp? For comparison sakes, I just had a customer in at R/T with a 6266 T4 .81 a/r (open inlet) 350z make 610whp at 18psi. Vince said there was another 30whp left in the kit with that housing. So the .96 a/r would get over 650whp for sure. All pump gas numbers of course.

I did a lot of EBP (exhaust back pressure) monitoring when developing these kits for the 350z, so I also speak from experience.... This is the main reason I only use the T4 turbine housing in all the VQ turbo kits.

I wish the 67mm turbos had a 70mm turbine wheel really kick it up a notch.

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750WHP starting @ $7,500 to the door
FOR DETAILS VISIT: http://www.the370z.com/members/boosted-performance.html
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