High Flow Cat, and DP question
Evolving Member
Joined: Nov 2003
Posts: 214
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At the time had stock exhaust and then added this. now I have TurboXS RFL Ti catback. Still have stock *****, looking into options, pobably going 3" hi flow or possibly cat delete. I heard it stinks though so I am undecided.
Re: High Flow Cat, and DP question
Originally posted by silvrevo
Im looking to upgrade my DP, and have heard that the cat it the biggest restrictor in the system. The couple question I have are,
Does a high flow cat make your CEL come one? And do you smell more gas than with the stock cat? And which High FLow Cat is the one to choose so these things wont happen. All I have now is an Exhale from WORKS.
Also with the DP, will it make the exhaust much louder? I plan on keeping the stock mid pipe with its two resonators. Also the DP Im more than likely going to get will be the HKS.
And if all high flow cats are going to be gas stinky, I think I will pass on that and just get the DP.
I will still see some good gains with just a DP, yes?
Thanks
Im looking to upgrade my DP, and have heard that the cat it the biggest restrictor in the system. The couple question I have are,
Does a high flow cat make your CEL come one? And do you smell more gas than with the stock cat? And which High FLow Cat is the one to choose so these things wont happen. All I have now is an Exhale from WORKS.
Also with the DP, will it make the exhaust much louder? I plan on keeping the stock mid pipe with its two resonators. Also the DP Im more than likely going to get will be the HKS.
And if all high flow cats are going to be gas stinky, I think I will pass on that and just get the DP.
I will still see some good gains with just a DP, yes?
Thanks
My 2 cents and then some,
Dan
Same with buschur , it is 150.http://www.buschurracing.com/cgi-bin....cgi?18X376545
Originally posted by Quickshift
I still dont believe a downpipe would free up that much hp. The cat can only let so much air through a time , you could have a 5in pipe behind the cat and only so much air would go though it. 21 Whp is a little extreme. I would understand that if you had upgraded the turbo or something of that nature. But from stock there is no way in hell you could gain that much hp from just a downpipe with the stock cat in place. He was asking which would give more hp , well losing the stock cat would up the hp . I have a 3in turboback from buschur with a high flow cat (with alot more mods). I sure as hell didnt gain no 21whp from just a downpipe DUDE. The stock cat is just like a restrictor you can only get so much out of it.
I still dont believe a downpipe would free up that much hp. The cat can only let so much air through a time , you could have a 5in pipe behind the cat and only so much air would go though it. 21 Whp is a little extreme. I would understand that if you had upgraded the turbo or something of that nature. But from stock there is no way in hell you could gain that much hp from just a downpipe with the stock cat in place. He was asking which would give more hp , well losing the stock cat would up the hp . I have a 3in turboback from buschur with a high flow cat (with alot more mods). I sure as hell didnt gain no 21whp from just a downpipe DUDE. The stock cat is just like a restrictor you can only get so much out of it.
I Dont think Hi-flow cat will make CE light, iam getting one on monday with 3" full catback - o2 goes on the hi flow cat. -kindda jdm design. they are saying it's hi flow cat but its really a test pipe - on which you can't pass emmision ( i dont want that smell when summer comes so it will help a little and it flows almost as good as testpipe ( i would change the downpipe also. )
Originally posted by 2k4EvoVIII
Got a HKS Downpipe for sale. Only has about 300 miles on it. and 2 weeks time. $250. Let me know.
Got a HKS Downpipe for sale. Only has about 300 miles on it. and 2 weeks time. $250. Let me know.
Last edited by boomn29; Feb 15, 2004 at 12:24 PM.
Originally posted by tweakdsm
I Dont think Hi-flow cat will make CE light, iam getting one on monday with 3" full catback - o2 goes on the hi flow cat. -kindda jdm design. they are saying it's hi flow cat but its really a test pipe - on which you can't pass emmision ( i dont want that smell when summer comes so it will help a little and it flows almost as good as testpipe ( i would change the downpipe also. )
I Dont think Hi-flow cat will make CE light, iam getting one on monday with 3" full catback - o2 goes on the hi flow cat. -kindda jdm design. they are saying it's hi flow cat but its really a test pipe - on which you can't pass emmision ( i dont want that smell when summer comes so it will help a little and it flows almost as good as testpipe ( i would change the downpipe also. )
Newbie
Joined: Dec 2003
Posts: 22
Likes: 0
From: Harrisburg, PA
I've got the Ultimate Racing full 3" turboback exhaust (3" DP, 3"TP, and 3"CB). Best darn thing I've bought for my car yet. I was very impressed with the quality and fitment of the downpipe. clears both tie bars with lots of room to spare. doo yourself a favor and get the thermal wrap option. i made the mistake of trying to wrap it myself and made it very ugly. plus the stuff itches like a bastard!