Car feels slower with apexi n1

[Deadrodent]

hey everyone...got my apexi n1 in the mail...cept it cost me 120 bucks to get it mounted and installed because it didn't fit at all. half of the piping had to be chopped and rewelded....the inside was very rusty as well...anyway atleast is sounds pretty mean.

only complaint is my car feels sluggish. the top end feels like it gained some but it's almost as if the car doesn't rev as fast or pick up as fast. i know people on here keep saying 3 inch exhausts don't take away low end but from my butt dyno something is definitely lacking now.

WHAT GIVES?!!?

[kamikazestorm420]

when i put the blitz nur-spec on .. i felt a lot of difference .. at least in my butt dyno.

check for exhaust leak? im not sure

[Deadrodent]

hmm...my car seems faster but only if i wring the hell out of the ka and rev it to redline...otherwise in the middle of my powerband it feels slower and less responsive....i thought exhausts were supposed to increase throttle response....

by the way, how is that s-tech/agx setup treating you? i have a set of s-techs just waiting for some agx's....damn...must...get...more....money....

[Chiefgmsr]

If your NA yea ur gonna lose low-end torque.

[Kenrik]

My advice... Get a new engine...

Seriously though i'm holding off getting a 3in till I turbo I think it's to big otherwise... Actually i'm thinking of doing a 2.5 even with turbo. I want low end power that's my whole point I don't drive 100+mph daily that's why i'm doing a fast spooling turbo

[Deadrodent]

My advice... Get a new engine...

Seriously though i'm holding off getting a 3in till I turbo I think it's to big otherwise... Actually i'm thinking of doing a 2.5 even with turbo. I want low end power that's my whole point I don't drive 100+mph daily that's why i'm doing a fast spooling turbo

yeah...i was always under the impression that you can have too big of an exhaust. it seems that i ended up getting fooled by people who claim you don't loose low end with giant piping. well i took my car for a spin again today. it feels slower until i hit about 3500rpm - 7000rpm....down low the car just kinda bogs and then once i hit 3k~ the speedo and tach start jumping...definitely can feel some kind of increase in power...just not the kind i had hoped for...

so what i'm saying is...

If you like a laggy jagged powerband where you have to wring the neck out of your engine just to gain a few peak hp then get a big *** exhaust.

If you like a smoother flatter powerband with less peak hp but doesn't bog down low get smaller piping.

I'm probably going to visit my local muffler shop and tell them to just scrap the n1 piping and replace it with 2.5. i'll probably be a lot faster
Modified by Deadrodent at 1:54 PM 9/16/2005

[lrb_2000]

weird.. I put 3" on and felt a nice little gain...low end feels fine... but I hollowed out the cat, so i put the silencer in.. feels pretty torquey, and some hp gain... but i'll take the silencer out when the turbo is finished.

[InsanityInc]

If your NA yea ur gonna lose low-end torque.

No. You don't.

Look at the link in my signature.

[Kenrik]

Oh come on yes you can go to big.... why not just completely get rid of back pressure and go with a 6in pipe.. You need there to be some pressure to get the air to come out the back!

[Nismo_Freak]

Not starting this arguement over, there isn't even a dead horse left to beat any more.

You need zero backpressure in any exhaust, period. If you think otherwise you are wrong and you need to look it up.

Do not confuse backpressure with velocity.