Motordyne 5/16'' spacer and MREV2 dyno test
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Originally Posted by donot521
I have a 2005 G35 coupe 5AT with sport package
so am I a Rev-up or non-rev up?
so am I a Rev-up or non-rev up?
.
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Originally Posted by BlueDevilBAMF
Based upon the description from Motordyne quoted above it seems that for the cost, it might not really be worth doing MREV 2 on a non Revup VQ such as my own. They seem to say that while I will gain some area under the curve, the gains above and beyond what I already see from my spacer won't be much.
The generally only recommed doing both on a non-revup engine is if:
1) Your A/F ratio is good. (If this is good it will make about 4-6 more HP in the midrange.)
and
2) You are either a hard core racer or a dyno junkie.
---
OTOH if you have a REVUP engine, its just the opposite, I almost always recommend doing both.
Last edited by Hydrazine; Mar 28, 2008 at 12:35 AM.
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From: Southern Cali --> 818
Since Dave's graphs were all the exact same scale, I was able to accurately photoshop his baseline with this latest graph..
Stock vs Exhaust, intake, spacer, MREV2
Stock vs Exhaust, intake, spacer, MREV2
Last edited by Skaterbasist; Apr 7, 2008 at 01:35 AM.
Quick question, is this the 5/16" kit you purchased?
http://www.g35parts.com/9083/osc/pro...roducts_id=319
http://www.g35parts.com/9083/osc/pro...roducts_id=319
It seems like much of that was from the exhaust. What do you mean by "exhaust?" Did you do headers, test pipes, cat back?
NVM, I trolled around and found another thread of yours with dyno. The results seem consistent with what I saw above.
NVM, I trolled around and found another thread of yours with dyno. The results seem consistent with what I saw above.
The graph below is the Stillen full cat-back on my '06 G35 6MT vs the OE cat-back.
Last edited by Paniller; Apr 18, 2008 at 03:23 PM.
Lolly Baggins, yup that's the one I'm running.
Paniller, for this test we only installed a catback exhaust. I have, however, subsequently installed headers and high-flow cats, but those came a few months after we did the intake mods including the MotorDyne stuff and the Stillen intake and catback true dual exhaust.
haagen_daz, I never drove the car with just the MotorDyne mods since we tested some other parts on the dyno that same day, but given that the plenum spacer does increase the overall volume of the plenum it might deepen the sound of the intake charge a bit by virtue of changing the resonance or harmonics of the overall intake tract and the plenum/manifold itself. Tony from MotorDyne can tell you more about sound if you shoot him an e-mail.
Paniller, for this test we only installed a catback exhaust. I have, however, subsequently installed headers and high-flow cats, but those came a few months after we did the intake mods including the MotorDyne stuff and the Stillen intake and catback true dual exhaust.
haagen_daz, I never drove the car with just the MotorDyne mods since we tested some other parts on the dyno that same day, but given that the plenum spacer does increase the overall volume of the plenum it might deepen the sound of the intake charge a bit by virtue of changing the resonance or harmonics of the overall intake tract and the plenum/manifold itself. Tony from MotorDyne can tell you more about sound if you shoot him an e-mail.
Last edited by Modified Dave; Aug 20, 2009 at 05:46 PM.
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On a REVUP engine the MREV2/spacer combo will change the engine sound substantially. Its louder, deeper and easily noticed.
Last edited by Hydrazine; Aug 20, 2009 at 05:40 PM.
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Correct me on this.. I have an 05 6MT.
so the MREV2's are made from an 04 lower plenum, and the top of each intake is shaved down to give better flow...
wouldnt adding a spacer to a revup engine give similar clearance over the top of each induction tube(or whatever the correct name is) so it would be pretty similar to having a revup with the MREv2 lower plenum and no spacer ?
but you get better overall gains by having even more clearance with both ?
so the MREV2's are made from an 04 lower plenum, and the top of each intake is shaved down to give better flow...
wouldnt adding a spacer to a revup engine give similar clearance over the top of each induction tube(or whatever the correct name is) so it would be pretty similar to having a revup with the MREv2 lower plenum and no spacer ?
but you get better overall gains by having even more clearance with both ?
Correct me on this.. I have an 05 6MT.
so the MREV2's are made from an 04 lower plenum, and the top of each intake is shaved down to give better flow...
wouldnt adding a spacer to a revup engine give similar clearance over the top of each induction tube(or whatever the correct name is) so it would be pretty similar to having a revup with the MREv2 lower plenum and no spacer ?
but you get better overall gains by having even more clearance with both ?
so the MREV2's are made from an 04 lower plenum, and the top of each intake is shaved down to give better flow...
wouldnt adding a spacer to a revup engine give similar clearance over the top of each induction tube(or whatever the correct name is) so it would be pretty similar to having a revup with the MREv2 lower plenum and no spacer ?
but you get better overall gains by having even more clearance with both ?
See this link
https://g35driver.com/forums/engine-...um-spacer.html
Last edited by sillyoldtayo; Feb 15, 2011 at 11:22 PM. Reason: More info
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