Hi guys ive seen and lot of info about this simple mod that has been positive and I was plannign on getting until i found this from 2005. This guy has a non rev up engine like mine and says

" the (dyno) graphs (which I will post when I get access to a scanner) show a 1-5 HP loss across all of the RPM range until you hit about 6200 RPMs which is where you get a tiny blip of 1.5 HP gain for about 100 RPMs"

So hes losing HP. Seeing as I almost spent 250 bucks on this mod and having just now found this article it makes me skeptical. Can anyone explain why this was making him lose power when all the other reviews show hp gains not loss??


https://g35driver.com/forums/reviews...edback-11.html

 

Dyno's are sensitive creatures. Literally anything can adjust and flex the numbers up or down. Even if done same day, same outside temp, and same humidity, there can be variations.

A plenum spacer will not take away horsepower or torque.

Here is a quote as to why numbers are higher with it...

Idk who Scott is, but he is correct.

Don't stress over the dyno showing less numbers, because it is an inaccurate comparison to prior the plenum spacer.

 

If thats the case, what other proof is there to look at? Imean I understand what it does but from what I was reading in the link I posted was that for 05 AT coupe the motor on it was actually pretty well designed. HP wasn't gained and in some cases was lost due to the z tube and the plenum spacer mods. I thought more air was a good thing but the link was saying that it could be more hot air when those mods are combined.

I mean CAI are supposed to work but ive seen plenty live action footage of it not doing anything at all. Its really got me thinking most of these breather mods/bolt ons are only good for maybe a few HP but the tune itself is where youre going to get your power significantly higher. Atleast thats how some of this info that ive been finding lately seems.

Maybe Infiniti got the engine right on the 05 AT coupes? Has anyone had success getting 20 hp outta the stock setup just by doing a tune?

 

Not lost, shifted. For TQ, it's better to have some intake resistance, and exhaust scavenging. For high RPM horsepower, better to freely flow. I say not lost, because it moved around the RPM band when those mods are in.

Nissan did a great job with these engines, yes. BUT they always have to factor in Noise, Vibration, and Harshness. Performance upgrades don't care about that, so they can squeeze the little extra power and torque out of it that Nissan left alone.

CAI's are not as good as a quality Short Ram with access to cool air.

Tuning a stock motor won't net much, if anything at all. Which is also why all these bolt-on's available don't sky rocket numbers. Nissan did a good job, there is a reason it was a Wards 10 best engine for 4 years straight.

 

Don't confuse/confabulate the spacer with an intake. It's pretty clear that the OEM intake is hard to improve on and many intakes do rob power (there's a compelling comparative thread on forum with dyno tests of different intake combos...search). Spacer on the other hand is universally regarded as number one N/A bolt-on. Don't let one single naysayer throw you off the track...something else was wrong, not the spacer.

 

Haha ok. Is there anything i can do to increase power at say 3k at 40 mph. I feel like when i slam on the gas it takes foreverrrrrrr to get up to speed (about 80). Will the plenum help with this or is i only good for low low end tq/hp? This mustang (2010 gt maybe? Tailights looked 2010) i pulled up next to kicked my *** in a matter of seconds. I didnt think itd be that bad lol. If not the plenum do you think the transgo kit will help get me to speed quicker (i know it doesnt increase power)

I read about guy on here who threw 3k+ worth of bolt ons into his car and hit 297hp at the wheels. Of course he stayed NA but If i throw 3k into my car its gonna be on a vortech lol!

 

A vortech? Try more like $10k to do it right and at LEAST $5k to do it wrong.

 

If in fact there was a loss in whp due to the intake it was because of the metal intakes tubing heating up. Our VQ motors love cool air, running an intake with the 3" metal tubing will allow a Prus to beat you off the line. Only Stillen's CAI/Z-Tube with it massive K&N cone filter and composite construction is not effected by heat. I has a CARB number so it's legal in all states and what I use as a backup to my Fujita intake. There is no loss in WHP installing a plenum spacer although it helps to follow the instructions! You'll need the breather mods to get the maximum out of your tune which include intake/plenum spacer/true dual exhaust system plus HFCs in place of those very restrictive OE cats!
Gary

 

You're like some sort of robot; Nobody knows what your algorithms mean.