Newb FI question

theDreamer

Please share who has done it and let them know to add to this thread: Forced Induction Finished Builds
Really trying to get a solid book of builds together from everything, so far I only have 1 build that made almost 550whp on a 2.5" exhaust and I really do not have much info from the guy other than he cranked the boost up above 10PSI to do it.

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theDreamer's Z // Fast Intentions // Uprev // GTM // HKS // TEIN
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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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750WHP starting @ $7,500 to the door
FOR DETAILS VISIT: http://www.the370z.com/members/boosted-performance.html
FB: https://www.facebook.com/Boosted-Per...6303179791462/
IG @boostedperformanceyeg

theDreamer

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

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theDreamer's Z // Fast Intentions // Uprev // GTM // HKS // TEIN
theDreamer's Silvia // URAS // GREDDY
Houston Zs // Facebook // Twitter // Instagram

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.

__________________
750WHP starting @ $7,500 to the door
FOR DETAILS VISIT: http://www.the370z.com/members/boosted-performance.html
FB: https://www.facebook.com/Boosted-Per...6303179791462/
IG @boostedperformanceyeg

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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750WHP starting @ $7,500 to the door
FOR DETAILS VISIT: http://www.the370z.com/members/boosted-performance.html
FB: https://www.facebook.com/Boosted-Per...6303179791462/
IG @boostedperformanceyeg

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

Mr.Squeeze

Here is a GTM TT Stage 1 with the 2.5 Fast Intentions it was my friend's car the engine has sence blown up. The care did make 550Whp without a problem, as far as other gas cars there there are countless GTM threads with cars with 2.5 inch exhaust making power.

[IMG]

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

elliotty

Not trying to derail the thread, but for informational purposes - what caused the motor to fail?

bldg636

Mr. Squeeze..... Can I use the fast intentions 3" exhaust on my current NA setup? Or is this only for cars with the turbos? I will eventually be going to FI but would like to change the exhaust prior and would rather not have to do it twice

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Ross
'11 370z
Just getting started . . .

Chuck33079

I personally wouldn't run the 3" exhaust on a non-turbo car. It's just too big for use with a NA car. I would expect a very noticable loss in torque with a 3" exhaust on a NA car. Buy a used cat-back for a couple hundred bucks from another member here for now, and put the 3" system on when you get the rest of the kit together. Then turn around and sell the used cat-back. I doubt you'll lose more than $200 if you shop around.

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2011 MB Touring-Sport-6sp-Nav/GTM TT/FI TT TDX/JTran/Kosmic/Eibach/Hotchkis/SPC/CSF/RPS/SoThatsWhereAllMyMoneyWent

bldg636

gotcha . . . thanks!

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Ross
'11 370z
Just getting started . . .

Mitco39

How would you lose torque by lowering the back pressure on the exhaust side? If anything your gains between a 2.5" and 3" would be minimal since the 2.5" has been proven to be sufficient all the way up to 500 rwhp. Its all about flow, and only flow, make it flow better and you have less back pressure. Less back pressure less work the engine has to use to move the exhaust out of its cylinders and thus make more useful power.

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2007 Chevy Duramax - EFILive Tuned By Me
2010 40th W/ Nav - Boosted Performance - UpRev Tuned By Me
The Mrs. Ride -2012 335XI N55 BMW - Cobb Tuned By Me, Built by her
My Build --> http://www.the370z.com/members-370z-...39s-build.html

Mr.Squeeze

The car was drivin very hard for 13000 miles raced all the time. A rod shot through the side of the block.


You can use it you will lose a little low end tq, but if your going turbo down the line ,and dont mind that then get it.

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