MitsuStyle - View Single Post - MAP's Evo 8 & 9 Exhaust Manifold Testing / Dyno Results

**v8klla** · 03-08-2011

Test Overview

As a follow up to our recent round of testing we decided to bring in another car and test every exhaust manifold upgrade that we offer for the Evo 8 & 9 platform

I do not know the ins and outs of this car (perhaps Jake can chime in) but I do know that its on E85 with an FP Black and supporting mods (with the exception of the intake manifold). We set the boost level to 27psi and the only changes to the tune were made to bring AFR's back in line, enjoy!

Stock Exhaust Manifold vs. MAP Ported Exhaust Manifold

The peak gains here aren't all that exciting but there were some promising results in the mid range (+13whp +10ft/lbs with .5psi less boost) and spool improved as well. Please note the peak boost figure is a small spike around 4500, the rest of the boost curve is nearly identical.

Stock Exhaust Manifold vs. MAP "Short Runner" Tubular Exhaust Manifold

Again, the peak gains here aren't outrageous but the mid range gains (+29whp +22ft/lbs) are substantial and spool hasn't suffered one bit! At just $449.99 shipped the horsepower per dollar ratio is hard to beat!

Stock Exhaust Manifold vs. MAP "Long Runner" Tubular Exhaust Manifold

Our last round of testing featured our in-house fabricated "long runner" tubular exhaust manifold. Based on other tubular manifold test results we expected this manifold to significantly improve top end power with a negative impact on spool characteristics, needless to say we were pleasantly surprised

As you can see spool characteristics were very similar to the stock manifold and power output was nearly identical prior to 4500rpms. Peak gains were impressive at +23whp +12ft/lbs but once again the mid range gains (+41whp +31ft/lbs) are where exhaust manifold upgrades really shine!

Conclusion

Ultimately, I'm very happy with the outcome of this testing as I still feel there will be a market for all three of these great products. I would have liked to compare these manifolds at a higher boost level with an aftermarket intake manifold as I feel the performance gains would have been even greater, but that will have to wait until next time. I hope this testing makes your exhaust manifold decision a little easier!

03-08-2011	#1
v8klla Join Date: Oct 2003 Location: Cottage Grove, MN Posts: 2,120	MAP's Evo 8 & 9 Exhaust Manifold Testing / Dyno Results Test Overview As a follow up to our recent round of testing we decided to bring in another car and test every exhaust manifold upgrade that we offer for the Evo 8 & 9 platform I do not know the ins and outs of this car (perhaps Jake can chime in) but I do know that its on E85 with an FP Black and supporting mods (with the exception of the intake manifold). We set the boost level to 27psi and the only changes to the tune were made to bring AFR's back in line, enjoy! Stock Exhaust Manifold vs. MAP Ported Exhaust Manifold The peak gains here aren't all that exciting but there were some promising results in the mid range (+13whp +10ft/lbs with .5psi less boost) and spool improved as well. Please note the peak boost figure is a small spike around 4500, the rest of the boost curve is nearly identical. Stock Exhaust Manifold vs. MAP "Short Runner" Tubular Exhaust Manifold Again, the peak gains here aren't outrageous but the mid range gains (+29whp +22ft/lbs) are substantial and spool hasn't suffered one bit! At just $449.99 shipped the horsepower per dollar ratio is hard to beat! Stock Exhaust Manifold vs. MAP "Long Runner" Tubular Exhaust Manifold Our last round of testing featured our in-house fabricated "long runner" tubular exhaust manifold. Based on other tubular manifold test results we expected this manifold to significantly improve top end power with a negative impact on spool characteristics, needless to say we were pleasantly surprised As you can see spool characteristics were very similar to the stock manifold and power output was nearly identical prior to 4500rpms. Peak gains were impressive at +23whp +12ft/lbs but once again the mid range gains (+41whp +31ft/lbs) are where exhaust manifold upgrades really shine! Conclusion Ultimately, I'm very happy with the outcome of this testing as I still feel there will be a market for all three of these great products. I would have liked to compare these manifolds at a higher boost level with an aftermarket intake manifold as I feel the performance gains would have been even greater, but that will have to wait until next time. I hope this testing makes your exhaust manifold decision a little easier! __________________ Chris Carey, President Modern Automotive Performance P: 763-545-3800 E: chris@maperformance.com We want your business! Please contact me directly for a quote or stop by the facility for a quick tour!