I wish I did the intake before the exhaust, I never heard a difference since the RTP's, y pipe and mufflers were over bearing. Oh well

 

hahaha yeah - BTW would you recommend resonated test pipes? I heard the rasp gets unbearable after removing the cats. What's your take on it?

 

Yeah, definitely resonated test pipes lol. I still get some rasp at certain higher RPM's but not at all while driving normal and I think its more due to the y-pipe, very tolerable.

 

Yeah prior to this I owned a G35X and had a AEM cold air intake with Megan racing Y pipe and removed the resonators and muffler (Straight pipe) and that rasp was soooooo nasty but the car sounded so aggressive on the lower RPMs.

I was thinking maybe the rasp is there because I removed the resonator. I didn't know that Y pipe caused it. I am going with GTHaus Y pipe in the future, not sure how it's gonna sound but I will find out lol.

 

The air is traveling way too fast through the intake tubes to heat the entire mass of air flowing through them. We're talking a few hundredths of a second for molecules to go from entering the filter to entering the throttle body. Wrapping them is a waste of time.

 

yet they're countless before and after with stillen intakes and admin tuning 3 inch cold air intakes yielding big power over stock. denser air/lower temps = more power. i got Art pipes on my G and i get no rasp... it sounds beautiful.... could barely tell that i changed from fast intentions high flow cats.

 

^^^ Nice - Is your car running more lean after the ART pipes? Did you check your A/F ratio

 

In my case, the aftermarket y pipe has a single 3" outlet that mates up to the stock mid pipe that I think is 2.5". So, the instant forced downsize in diameter is the cause of the rasp. Not having cat's certainly doesn't help either though lol

 

I agree, but at low speeds it may help to reduce the intake tube heat soak and IAT (intake air temp).

 

May not be any real benefits besides it looking cool but, it certainly cant hurt anything..

 

Yes it did lean out. I also ported my intake manifolds. Return imminent.