Blower or exhaust, which should i get first.

dvtr- · May 29, 2010

Since the kenne bell 2.1L is alot more expensive than the exhaust(lt headers x and catback) id like to get that outta the way first, but how much will my stock exhaust with welded on 44's be bottlenecking the blower? Or will i be having any negative affect at all?
This is an 01 GT 40 k miles

bhuff30 · May 29, 2010

The stock cats and H pipe are fairly restrictive. I would recommend doing the exhaust first, then the blower. You'll want a good tune after installing the blower, and adding the exhaust on later could effect the tune.

LaserSVT · May 29, 2010

Pretty much everyone does exhaust first cause its cheaper. BTW, long tubes are one of the most expensive mods you can do that give the smallest HP gain.

dvtr- · May 29, 2010

So should i get shorties?

slayerripkdc · May 29, 2010

No, get long tubes!

LaserSVT · May 29, 2010

If you are gonna go through the trouble to swap them then you should get long tubes. Equal shorties might show you a 2-5 hp gain where long tubes MAY give you up to 12 ho but usually 7-9 is the norm.

Ponyup1 · May 30, 2010

dvtr- said:
So should i get shorties?

No definitley do full exhaust first.Do the blower and tune last.
From what I have seen the stock H pipe is very restrictive.
Also don't do shorties get longtubes.I have seen gains of 13-15 rwhp
from longtubes on our cars.What exhaust do you plan on getting?
If you have emissions testing where you are at plan on getting
high flow catalytic converters or you will fail emissions.

Deleted member 38176 · May 30, 2010

dvtr- said:
So should i get shorties?

NOOOOOOOOOOOOOOOO!

slayerripkdc · May 30, 2010

If you must get the blower and tune first, at least swap out the stock mid pipe.

StangSims39 · May 30, 2010

exhaust first, let it breathe better, then throw a blower on

what9612 · May 30, 2010

buy longtubes and install them yourself. it takes about a day but is well worth it, not just because you save money, but you will then be able to dive in and take parts off in the future. i was scared to do it, but after i have full confidence in taking anything off the front end.

32ValveRom · May 30, 2010

dvtr- said:
Blower or exhaust, which should i get first?

I would recommend getting the exhaust first. You'd be able to feel the difference more if it were NA. Also, you wanna allow your car to breathe. Try blowing out of a McDonald's straw then compare it to a coffee stirrer.

dvtr- said:
So should i get shorties?

What? Hell no

dvtr- · May 30, 2010

Ponyup1 said:
If you have emissions testing where you are at plan on getting
high flow catalytic converters or you will fail emissions.

How do most ppl with an off road x pipe pass emissions testing? dont they just get mil eliminators or a tune to clear the error code?

BlackStang03 · May 30, 2010

dvtr- said:
How do most ppl with an off road x pipe pass emissions testing? dont they just get mil eliminators or a tune to clear the error code?

They dont pass.... the MIL eliminators just get rid of the CEL

Most states either do the sniffer test, or visual and some do both. If they do visual you can gut a cat or put on the shields to look like a cat...if they do the sniffer test then their is no way around that.

Ponyup1 · May 30, 2010

dvtr- said:
How do most ppl with an off road x pipe pass emissions testing? dont they just get mil eliminators or a tune to clear the error code?

Yeah you won't pass emissions.
If you live in a place that has strict emissions laws then I would consider
getting high flow catalytic converters.For yearly inspection you can
not only turn off your check engine light with mil eliminators but,you
can turn it off with a tuner or in a tune.

Barnaby · Jun 1, 2010

I guess I'm going against the grain here but I would do the blower first (as I have on a couple of other cars myself). Typically it has always been harder for me to come up with the cash to buy a blower vs. smaller components so do the high $$$ item first then the rest will come much easier.

darkside03gt · Jun 1, 2010

I say blower all the way.

scupking · Jun 1, 2010

If you want to save some money keep the stock headers go with a O/R or catted mide pipe and a catback. Then go with the blower.

Rickyll7 · Jun 3, 2010

Its hard to beat the hp/$ ratio of forced induction.

usaf_branham · Jun 3, 2010

i would leave the stock manifolds alone, put a good mid pipe on it, then the blower. if you do the exhaust after the blower it WILL affect the tune... when i had mine tuned the first time, i had just welded brand new high flow cats in. they were choking the whole system. after i drove on it for about 8 months and had it retuned, during the baseline run, the air fuel jumped up from 11.8 to 12.9, just from breaking in the cats... lol rwhp jumped from 357 to 390 as well...

whats really scary, is that i had an o/r h pipe swapped in there for a little while, which makes me really wonder what my a/f was at that time... the car ran AWESOME with the o/r h installed, im lucky i didnt cook my pistons...

thats my 2 cents.

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