I originally thought I was seeing very little to no improvement with the manifold. After tuning both the stock and the M370, I found that I only lost 2whp way up top between 7200 and 7500 with the M370, but gained as much as 10 lb ft of torque everywhere else. With that being said, I absolutely recommend the M370 manifold.

Glad to know bout that, thanks man! :tiphat::tup:

I'm wrong and recant.

The M370 clearly out performs the factory IM throughout most of the rev range.

These dynos are under same conditions, so very comparable (although massively high CF!)

Yeah, I'd say it's worth switching back to it :tup:

http://www.the370z.com/members/jordo...vs-m370-im.jpg

well this is a nice to see. with so many ppl bashing it, its nice to see actual data that shows its worth the money :)

I've still got mine on, it's been on for many months, and I'm happy with it overall.

I think all of the results you have to take with a little grain of salt. I don't know that anyone's every done a *perfect* comparison (same day/dyno/conditions, both manifolds, and each optimally tuned with different ECU settings), and even then we'd need such a perfect comparison for every set of supporting mods to boot :)

The general trend of the evidence we have, though, is it helps increase torque area under the curve all through the middle. That counts for a lot more than some tiny fraction of power at the very peak of the RPM range (where you're unlikely to usefully be for more than a split second in real conditions).

Actually, the two runs I posted are about as close as you can get in ambient conditions. Only oil temp and IAT's are unknown. Both runs are in same gear too.

Oil temps were between 180 and 185 during both runs. IAT's should be identical. Industrial fan was blowing through the front bumper and two shop fans blowing exhaust out the door.

Oh I missed that, good job :) You did run a separate optimized tune for each right?

Yes. And this is on a full bolt on vehicle. The gains are consistent no matter the extent of mods. At least when comparing NA.

It seems most people often look only at the peak HP gains when deciding whether a mod was effective, its really about the total area under the curve. More area = More power. Sacrificing 5 peak HP up top for more usable mid-range power is a win to me. The M370 looks like a great mod and I'll likely pull the trigger on it soon. Thanks for putting up your info.

Sorry to revive an old thread =/! But...I am not picking up a lot of valuable information from most other threads here. Z1 Manifold Vs Motordyne Manifold what do you guys think as far as those go?

I think the results were similar with the Z1 nearly matching the MD in TQ, but giving more up top than even stock