uhh... I think I stumbled in when things got ugly.
Anyway, to get back on topic - I'll be installing the A-spec test pipe this weekend. I have stock headers, 50mm skunk2 b-pipe and axle-back, and a fujita cold air intake. I'll let you know what sort of sound change I experience.

 

Ya, sorry guys.. This was totally unnecessary.

If it was me and I was doing NA applications I probably wouldn't do it.. It might get you a couple more HP and make it a tad louder, but the black soot that builds up on the rear bumber from the exhaust isn't pretty and nor is it easy to get off!

 

Stop the insults and the bickering NOW.

I don't care who thinks they are right and who is wrong. The insults and petty arguing will cease, or you will be removed, not just your posts.

This is your only warning. And this goes for all of you who are in this thread arguing.

I have unapproved the inflammatory posts to keep this thread on track.

 

Thank you for dealing with it.

As for the black soot that I get I'm not sure if it due to my turbo but I think all cars that have a cat delete spit this gunk out

 

Hm? Wasn't aware of it except typically with FI applications...
Maybe some of the NA fits with test pipes can chime in? Any blackness?
Otherwise guess I'll just have to wait and see and then let you all know!
P.S. I'm stoked to get this on, regardless of power gains. Call me obnoxious but I like the sound of just an engine with minimal restriction - 4 cylinder or otherwise!

Wonder what the L15 would sound like just on an engine dyno... I digress.
Thanks for handling the debacle Sid!

 

I think that sums up the discussion. +1 to that.

 

my last car with a test pipe was NA and built up black soot. but it wasnt much to be concerned about. i would wash my car once a week and it would wipe off easily. nothign to be concerned about IMO.

 

I personally don't see any purpose in this, if you want too then sure go ahead. Just expressing my opinion. Sure modding is fun and what not, be a test pipe on a 1.5 na economy car? It'll sound like crap and won't make your car run better. Hell I love test pipes, I gained 7whp on my S2000 with a test pipe alone. But on a Fit? You probably won't see more than 2. You'll sound like a weedwacker and will be just as slow...

 

So I'll try to respond to the initial post, regardless of everything that's been said thus far...

I just installed the A-spec cat delete today, and it's a substantial sound increase. From 3K on, the rasp is unmistakable. Keep the shifts mild and low on the RPMs and there's not much difference. It's WOT (or 80% throttle more accurate to say with the DBW ) where the car transforms in sound. Also, I feel like the power below 2500 RPMs has decreased, but from there on up there's quite a bit more (respectively, again since it's a 1.5L eco car).

I have a Fujita cold air and the skunk2 50mm setup, and now this. The sound is not for everyone; if you do get a test pipe, look for one used to save some money first (or just got with a-spec since they are the cheapest one available now) - you may end up trying to sell it off yourself. But for me, I don't mind it. I don't really have any good way of recording the sound unfortunately, but my guess is since you've got the A-spec headers, the axle back, and then a drop in, the sound of the exhaust would definitely increase and you'll get the Honda rasp., but probably not as much as me - since I've got a b-pipe and a cold air intake not just drop in.

If you've got some money to spend and you mod because it's fun and not necessarily looking for some specific goal/gain, then do it.

 

Just today I got a hold of a spare (stock) catalytic converter. I punched the guts out, installed the mechanical CEL fix and then... *Gasp* used Thermotec tape (had it left over from doing the header) on the "home-made test-pipe" I put it on the section of pipe leading to the cat, removed the heatshields from the cat, taped it, sprayed it, then put the heatshields back on...

Very noticeable increase in power. Very noticeable. Barely noticeable increase in sound...

I'm delighted.

 

i want to "borrow" someones cat delete... just to see if i like it in real life. lol

 

should have sold that cat for $250 at a junkyard then bought a aspec test pipe for $80 and profited $170.

it really amazes me that people ruin a part that costs $800 to buy if they ever need it, or even worse, destroy a $800 part fo save $80.

 

Thanks so much for your opinion. It was a defective one that was replaced, so it really had no value at all.



It really amazes me when people who don't necessarily have a clue what they're talking about, express strongly worded or judgemental opinions.

 

a junkyard doesnt necessarily need a working cat to be profitable. they recycle it.

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any good online source to find a junkyard that'll give reasonable cash for a cat?

 

Any idea if wrapping the test pipe might help with the slight buzz at ~3K? it goes away at 4K, isn't there from idle to 28K or so...

Or any thoughts in general?

 

what??

but wrapping the test pipe wont change the sound. the raspyness is coming from the muffler, not the test pipe. its the test pipe allowing faster airflow that is causing the sound. adding a resonator would help, but i dont really care to much since i will be turboed by the end of the month and it should sound much better.

 

If I swap out the axle back for either a bodied muffler or twin loop design, keep the skunk2 50mm b-pipe with the a-spec cat delete, the rasp may decrease?
Boost is in the future for me as well, but probably not as soon as you, so in the mean time I'm just trying thinking of options.

 

not sure....a twin loop muffler will help or a muffler such as apexi WS2. but the raspyness si just somthing that hondas have if there is a very free flowing exhaust.

 

From everything I have heard it increases the sound quite a bit, but also provides a decent gain for the price. I run with my cat in right now, but I do own a T1R testpipe that I had planned to put in... but since then I am instead trying out the WeaponR header which replaces the cat all together.

I think with a N.A. & full header, exhuast and test pipe setup you will find it removes a lot of the back pressure to the point where it might actually lose power. You may want to use it with an intake that flows easily like an SRI or maybe a small chamber like the H-Fit one. I can't offer concrete evidence, but from playing around with my setup over the past two years I believe this will ring true.

You are going to want to watch out if you are running all the I/H/E goodies & test pipe because the Fit will run too lean. Maybe pick up something cheap like an Apexi-Neo to correct it.