Try Metal Cat. It's good quality. I'm using one now and dynod comparison both straight pipe and metal cat which produce 0.2-0.3 kw difference. With straight pipe you produce a bit more hp but just not legal.
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Try Metal Cat. It's good quality. I'm using one now and dynod comparison both straight pipe and metal cat which produce 0.2-0.3 kw difference. With straight pipe you produce a bit more hp but just not legal.
how much is that installed?
lol I would do that if i dont have a house lol, well.... metal cat sounds interesting..ALN(andrew) where did you get the metal cat from? And did you get a CEL (Check engine light) at all? thanks bro
From what I remmeber it is around $440 installed. I bought it from Re custom. I didn't get any problem in engine check. The only difference is the sound, become louder compare to stock CAT.
your car should go a lot smoother if u got hi flow cat in
if u only feel the sound diff... must be sth wrong?
I meant other than the gains. the cons is the sound increasing. The exhaust feels free after the hi cat flow installed.
what about emission? i heard it will produce more emission (smog?), eventhough it might still be within the legal limit
I didn't do the emission test but I have heard the rumor about it, producing more emission
Sorry, have you dyno compared it with stock CAT as well?Quote:
Originally Posted by ALN
I'm really curious, as its probably one of my preferred mods, although I'm not keen on releasing more poisonous chemicals into the atmo at the same time :(
Reminds me of the discussion of 10HP gained between the Fujitsubo catback exhaust vs Hondata exhaust, which not surprisingly the latter was said to include a hi-flow cat change...
As a side note, I know it is easy to measure back-pressure to guesstimate how much power could be made, but its a hassle. Obviously the lower the back pressure combined with the smallest exhaust pipe for higher gas exit velocity, should be the better? :D
I didn't dyno comparison between stock cat and high flow cat.
But I did dyno after high flow cat installed(with fujit cat, comp airbox, iridium spark), I got 120 kw atw on dynodynamics, which reads 15% lower than dynapacks. I suspect I lost few kw and torque since I have lightweight flywheel on.
Standard euro on dyno dynamics made 98-105 kw. Based on that you could work out the number maybe.
But for sure after installed you will feel more flowing through your exhaust and feel free when you driving ,cons is noticable increase in sound.
nice man
that's a big gain
should be a bit more with header
i really want to get a hiflow cat now
btw, what is the inlet size for the cat u using for yr exhuast?
2.25? 2.5'?
I use 2.5" metal cat since it is closest size for fujit catback.
I'm using comptech header now and the gain was not so bad with additional 64mm TB, I got best run 126kw on dyno dynamics. It was at summer time so I suspect lost few kw and I didn't change my oil after I went 1/4 mile 2 months before the dyno.
Combining header+ high flow cat+ 64mm TB give notice gains above 6000 rpm but I think bored TB doesn't give much power unless you change your head internals then you'll see notice gains that's what I see in other K series forum