thenuge26

iTrader: (2)

Where did you see that? Most cost $450-600 for the catback, and another $300 or more for the midpipe/cat.

Oh, I see, you have an NA. I'm looking at NB systems I guess, which are a lot more expensive. I never noticed since I've never cared about NA exhausts.

miatadaxdriver

I've ordered a 2,5" cat replacer and cat back system. I know a 3" would be better, but a full 2,5" system is way better than what's installed now.
At the moment my decat pipe is 2" and cat back 2,25"

suggestions for a next step?

18psi

iTrader: (76)

yes.

3"

Leafy

iTrader: (1)

Or 1.8 swap.

miatadaxdriver

@18PSI

can you show me the difference in power gain on a 1,6 with a 2,5" vs a 3" please?


@leafy
1,8 swap is not an option for now

concealer404

iTrader: (3)

Has next to nothing to do with motor size. You have a turbo car, and you're making xxx amount of power.

If there's power gain on a turbo 1.8 going from 2.5" to 3.0" then there's gains on a turbo 1.6.

18psi

iTrader: (76)

I don't need to show you anything. I don't care. You see - when we suggest things to people around here the burden of proof is not on us, because ultimately its your car and no one cares. We simply provide advice based on what we've experienced and seen. No one is going to go out of their way searching for threads and info...You should be the one doing it. You asked for advice on improving spool, you got it. You decided to do like 3/4's of it, then ask us "what is the next step". Its almost like you really want to spend more time and money for less results. Why not just do something properly from the get-go?

Just a thought.

Fireindc

iTrader: (13)

Dirty vlad and the boys are right again. OP return your exhaust while you still can and get something you wont have to upgrade again down the road, it sucks, i know.

miatadaxdriver

Ok, I give up What about FM?

my only other option is return the 2,5" and buy this one
fits my 2,5" DP
http://www.flyinmiata.com/tech/dyno_...id_exhaust.pdf

concealer404

iTrader: (3)

Sure looks like a 3" exhaust.

miatadaxdriver

waste of money?

concealer404

iTrader: (3)

I'm a little curious as to how you arrived at that conclusion...

miatadaxdriver

Sorry, my mistake. My english is like my exhaust. Not very good at the moment.

Now I know: sure looks like = is

Thanks concealer404

concealer404

iTrader: (3)

Now figure out a 3" downpipe or something for maximum baller.

Fireindc

iTrader: (13)

Glad you are going for a 3" now. I too thought 2.5" "was enough", now i'm going to re-buy a downpipe and exhaust because of it.

By once, cry once.

nitrodann

It's all in the downpipe anyway.

Just do a 3" turbo back, and call it a day. This REALLY isnt complicated.

3" turbo back.

Mandrel bent.

High flow cat or none.

Straight through mufflers you can roll a tennis ball through.

Done. Honestly.

Dann

EO2K

iTrader: (37)

Regulation tennis ball is 2.575–2.700 inches

nitrodann

Its a pretty common figure of speech when referring to mufflers.

Dann

EO2K

iTrader: (37)

I know, I'm just feeling snarky and I had to look up the tennis ball thing the other day so it was topical.

I'm really not one to talk, I'll be running 2.5" from DP to bumper because I can't take good advice.

sixshooter

iTrader: (12)

Question: Who is the weenie complaining about slow spool? Answer: Not the guy with a 3 inch exhaust from the turbo back.