Which makes more power- leaner burn or more ignition timing

[TeKiZeRo]

Atlvalet, when do you think those will be in full production? I would love to get my hands one one. I hate the feeling of slowly dying in my car whenever I have to stop :).

[Mellon]

there are a couple of Cooper S wearing some fools out at the local Autox...I couldn't belive it.

Haven't been to many autox's then eh?

I rarely miss one around here

[atlvalet]

Hopefully in the next month or two :) These will not be made in China :)

[TeKiZeRo]

Are you going to design it to look like a TP or a cat? :)

[trinydex]

I had a muffler shop once tell me my car would be faster with a cat because engines need backpressure hahaha. I think what he failed to realize is that we already have a massive exhaust restriction...the turbine fins!

On NA cars exhaust pipe sizing is beneficial to power production. Too large an exhaust pipe and you will lose power. Too small an exhaust pipe and you will choke the engine. I laugh when I see reglar NA Honda civics with 3 inch exhaust piping.

it is dangerous so make this generalization. you will not lose power if your exhaust is too big. you'll lose power on the low end and gain power on the high end. however if your car does not have the revs to get to where the power increase is shifted then that's like putting cams that have too much lift for your stock head, no additional benefit and much increased complications and shortcomings.

[trinydex]

Hopefully in the next month or two :) These will not be made in China :)

have you been testing these hard in roadrace conditions at all? i would get a cat but i'm afraid i'd melt it. i spit fire regularly from my car in those high load situations at partial throttle where my bov opens.

[awdnottwo]

Around here it usually the supercharged miatias that beat up on everybody at the auto-xes.

[atlvalet]

I know these have been used in SCCA autocross races, and possibly HPDE's...but I can't give you hard data. Smack from NorCal will have one soon, and I know he beats on his car. So, soon, he can give his feedback.

Since the catalyst is metal, I'm not sure if you could melt it...but anything is possible.

I could make these look like the RRE rally cats, but that would be extra. Right now I am just focused on getting these produced. Target pricepoint is $250, including 2 gaskets with fire rings. You should be able to use existing OEM bolts. O0

[trinydex]

don't make it look like a rallicat. make it look like a stock cat :]

are you gonna call it the valetcat :]

[atlvalet]

I think I am going to call it the 8/9 Design Race Cat :)

[mhgsx]

I think I am going to call it the 8/9 Design Race Cat :)

Does it clean well enough to keep the CEL away??

[atlvalet]

I think I am going to call it the 8/9 Design Race Cat :)

Does it clean well enough to keep the CEL away??

I don't think cleaning has anything to do with it. I could be wrong, but I think it has to do with flow. Once in a blue moon I'll get a CEL, but that's when I'm logging with my CReader not in the OBD-2 port. I recommend everyone get a CReader. They're cheap and effective.

[trinydex]

it has to do with cleaning. otherwise you could put a tiny exhaust on your car and pass smog.

[nj1266]

^^^It could be both, but the trick is to use an anti-fouler and space the secondary O2 sensor from the exhaust stream.