mps stock boost and max boost outta stock turbo

[FatCat]

I used to think boost was everything as well, you will get more benefits in increasing flow and decreasing IAT than straight boost increase with these smaller turbos.

[rayd]

i got mine set to 19PSI, but it wont pass more than 17 in the lower gears, im guessing not enough air, or maybe summer heat? but on highways in 4th,5th ive noticed it hitting 21-22PSI!

[2XS]

i got mine set to 19PSI, but it wont pass more than 17 in the lower gears, im guessing not enough air, or maybe summer heat? but on highways in 4th,5th ive noticed it hitting 21-22PSI!

The first 3 gears are torque/boost limited.

The stock turbo is only making heat after 17psi.

18psi dyno runs show more heat/less power produced with back to back runs.

[Doug_MPS6]

RAYD, be wary of boost spikes (say, +18psi) at lower rpm on freeway in higher gears. If you have a Dashhawk you can see the engine loadings.

[rayd]

RAYD, be wary of boost spikes (say, +18psi) at lower rpm on freeway in higher gears. If you have a Dashhawk you can see the engine loadings.

Yep, I noticed that I was getting fuel cut in 5th 6th when in lower RPM, dialed down to 17.5PSI until I get my DP and tune

[Jmac]

Boost isn't everythig with these cars. Lean it out, add a smidgen of boost and more aggressive timing.

[rayd]

Boost isn't everythig with these cars. Lean it out, add a smidgen of boost and more aggressive timing.

I'm attempting this now using my haltech interceptor, hopefully it works out well!

[SydRuss]

I installed a boost gauge on my stock MPS 6 to find that in city driving it easily reaches 15 - 16psi, and on the highways goes up to 17psi. I gotta say that i am disappointed as i was hoping that stock MPS would produce less psi than that, and that i would get good gains by increasing boost, and doing some other mods.
What to do now?

[Grajy]

DO NOT LEAN THESE CARS OUT!
Engines with forced induction NEED to run rich. More fuel+less timing+more boost= Safe power. The guys in the states are leaning out their cars and blowing the engines.

[NQMPS]

Will an after market Boost controller get rid off the low boost control in the lower gears?