IPD Plenum - best performance mod?

[michaelpetersen3]

Hi Paul, I really like the idea of the direct connect dyno. It takes one more variable (wheel rolling resistance) out of the equation. Should give you more consistent results. Im pulling 79HP/L on my 3.2. You should be able to pull 285HP from your 3.6 w/ exhaust work, maybe 290/295HP if you eliminate rolling resistance. BTW, if you want to see the details on my exhaust mods and dyno results, I posted a vid several years ago here: https://youtu.be/MdCQg2tJFYg.

Hi Ike, Sounds like you have more depth on the Porsche tune than I. We ran the car back to back with the stock tune vs Fabspeed. It was an honest 4-5 HP. Not huge, but honest. Looked like the achieved it through a leaner A/F ratio. That said, when I spoke to Fabspeed they clearly outsourced their tune, but I do not know to whom. Fabspeed acted as the intermediary. It took them 2 tries to find the few HP, but they did. As I mentioned, they are no longer offering tunes as the EPA shut them down. Disappointing, as the number of tuned cars is 0.001% of the overall car population, and most of these cars see little street time. They are chasing mice nuts IMO. Government agencies finding more reach than value (I'll stop my political rant now, sorry).

[ike84]

Originally Posted by michaelpetersen3

Hi Paul, I really like the idea of the direct connect dyno. It takes one more variable (wheel rolling resistance) out of the equation. Should give you more consistent results. Im pulling 79HP/L on my 3.2. You should be able to pull 285HP from your 3.6 w/ exhaust work, maybe 290/295HP if you eliminate rolling resistance. BTW, if you want to see the details on my exhaust mods and dyno results, I posted a vid several years ago here: https://youtu.be/MdCQg2tJFYg.

Hi Ike, Sounds like you have more depth on the Porsche tune than I. We ran the car back to back with the stock tune vs Fabspeed. It was an honest 4-5 HP. Not huge, but honest. Looked like the achieved it through a leaner A/F ratio. That said, when I spoke to Fabspeed they clearly outsourced their tune, but I do not know to whom. Fabspeed acted as the intermediary. It took them 2 tries to find the few HP, but they did. As I mentioned, they are no longer offering tunes as the EPA shut them down. Disappointing, as the number of tuned cars is 0.001% of the overall car population, and most of these cars see little street time. They are chasing mice nuts IMO. Government agencies finding more reach than value (I'll stop my political rant now, sorry).

I'm 100% on board with your rant. ****************, you cant even buy a new tractor without a def system on it. I recently stripped all my emissions gear on my Duramax 3500 - not because I ever roll coal, but because the rules are so stringent that when a part breaks it puts the truck into limp mode with permanent dtcs that can't be cleared without a gm reader.

Our forum has a lot of super knowledge guys and gals with tons of experience, but the thing we don't have among us are engine builders. They just don't really thrive in the Porsche world. I'm certainly not one, but I can tell you this - there are only two ways to make REAL power gains on a NA motor - built engine with lighter/stronger components and more aggressive cams OR conversion to forced induction. Unfortunately there aren't great kits for either of these available for the M96 motors. The x51 option was a "built" version of these motors but was never offered as an aftermarket kit so that's out the window. TPC made the SC and now the TC kits for these cars but I wouldn't trust them. So, people are left with intake/exhaust mods or engine swaps.

I will say one thing though, twin mitsu td06h are perfectly sized to run a low boost setup on the 2.7s good for 300 hp

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[PaulE]

Originally Posted by michaelpetersen3

Hi Paul, I really like the idea of the direct connect dyno. It takes one more variable (wheel rolling resistance) out of the equation. Should give you more consistent results. Im pulling 79HP/L on my 3.2. You should be able to pull 285HP from your 3.6 w/ exhaust work, maybe 290/295HP if you eliminate rolling resistance. BTW, if you want to see the details on my exhaust mods and dyno results, I posted a vid several years ago here: https://youtu.be/MdCQg2tJFYg.

Thanks for the video Michael. Interesting that the Max Flow mufflers actually make a little more HP than the Super Cup ones! I've already got those same Fabspeed headers with 200 cell catalysts, so if I get the itch for more power, replacing my CircuitWerks mid pipes and stock muffler would be the next step.