R33 Exhaust

[ULOOOK]

Hey Guys,

Today i had a full(turbo back)3" stainless system with no mufflers fitted to my rb25det, and i dunno if its me but it feels like it has lost power if anything, it seems to take longer to get to full boost(10psi). Any thoughts on this topic would be appreciated.

Thanx

[shyr33]

hey ULOOOK im still a newbie at all this but could it have something to do with your bigger exhaust causing to much back pressure in the exhaust and pushing back onto the turbines.

Or is having a bigger exhaust supposed to releive that back pressure? Like i said im still learning all this stuff Give it a week or so for your car to get used to it i say

[leech_]

you will probably find it takes a little longer though generally not that noticible. i reckon you will lose a small amount of low down power but gain alot high rpm power. its a tradeoff

[NZM.031]

hey mate, i had this problem with my modded atmo 31. when i got a 3" ehxaust put on it, felt like it lost heaps of torque. turned out it was just the difference in noise that led me to believe it had lost it, id say thats what urs is.

cheers

Linton

[Fly_With_Sky]

when i fitted my full system it did wonders...boost came on harder, had way better flow so better mid range and top end, and it also drove better off boost i thought.

So i find it very interesting that you think its worse becuase it is supposed to do wonders on your car expecially when looking at how restrictive the stock exhuast was.

[fresh]

yeah ditto here, i noticed a massive improvement over stock when i fitted a bigger exhaust

and yeah the bigger exhaust will relieve backpressure, not increase it

[Rasi]

When I fittied my system I had similar concerns. Have you had it tuned since fitting it? What ended up happening in my case is that it was running at around 10psi (i thought it was at 5psi, long storey and irrelavent why), when the exhaust and dump pipe went on it jumped to about 13.5psi. The result was that boost cut and overfueling caused a lack of response etc. Once tuned the car is totally different and went from 150rwkw to 180rwkw. I suggest getting it duno tuned to ensure that boost is correctly set and that you are not running too rich.

Hope that helps

[ULOOOK]

Thanx for tha feed back guys, yeah i tend to agree that it has more top end after taking for another spin last night.

Thanx