Most power seen with a RB catback???
03-09-04, 04:15 PM
#1
Hey, where did my $$$ go?
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Most power seen with a RB catback???
Whats the most power any of you have seen/heard of with a RB dual tip catback or the one from Pettit which I hear is exactly the same.
STEPHEN
STEPHEN
03-09-04, 09:23 PM
#4
Eats, Sleeps, Dreams Rotary
I dont know for sure but I have it and going to do a Gt35/40 install soon...shooting for a little over 400 so we'll see if the RB duals will allow that.
03-10-04, 06:13 AM
#7
Originally posted by paximus
i'd also like to know, keep em coming
do you think ~500 would be possible with it?
i'd also like to know, keep em coming
do you think ~500 would be possible with it?
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03-10-04, 09:07 AM
#8
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I'm not so sure about that. I'm starting to wonder if it becomes a big restriction once you get over 400rwhp. I think on my next dyno session I'm going to unbolt it and see what difference it makes but I was hoping someone has already done similar or that someone might have made close to 500rw with one.
STEPHEN
STEPHEN
03-10-04, 06:50 PM
#9
i know if flows well, i'm just wondering how well, my dual n1 flowed tons, but loud as hell. and my tanabe is quieter, but still flows plenty.
i just want an exhaust as quiet as i can get it, without affecting power. i'm mid 400's now and getting tuned for more boost next week. i've seen on the dyno what exhaust restriction can do and am trying not to make it a limiting factor. but....i'd live with 15-20hp less to get it quiet.
i just want an exhaust as quiet as i can get it, without affecting power. i'm mid 400's now and getting tuned for more boost next week. i've seen on the dyno what exhaust restriction can do and am trying not to make it a limiting factor. but....i'd live with 15-20hp less to get it quiet.
03-11-04, 09:53 AM
#11
I doubt it makes much of a difference. There is no reason to have an excessively loud street car in hopes of gaining like 2 hp with a loud exhaust. Vosko made somewhere in the 450 range. I've put down 470 with a greddy sp exhaust, which is a little louder than racing beat.
03-11-04, 01:10 PM
#12
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Originally posted by LETHAL RX7
did 492 atw with the single tip...
did 492 atw with the single tip...
What kind of setup was this on? How much boost?
What I'm trying to figure out is eventhough you made 492 would it have made a lot more with a different cat back?
STEPHEN
03-11-04, 01:14 PM
#13
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Originally posted by Rotary Experiment Seven
I doubt it makes much of a difference. There is no reason to have an excessively loud street car in hopes of gaining like 2 hp with a loud exhaust. Vosko made somewhere in the 450 range. I've put down 470 with a greddy sp exhaust, which is a little louder than racing beat.
I doubt it makes much of a difference. There is no reason to have an excessively loud street car in hopes of gaining like 2 hp with a loud exhaust. Vosko made somewhere in the 450 range. I've put down 470 with a greddy sp exhaust, which is a little louder than racing beat.
You talking about that ignition break up spike that caused his HP to jump 20rw before plumiting down 50rw? lol
I think his "solid" numbers were more like 425-430rwhp which is what I've seen from other people running that cat back......for all the others I've personally seen I felt they should have been making another 20 or so at the wheels. Thats why I'm asking, I have a feeling the RB catback is restricting.
Might be wrong though if Lethal RX7 is making 492rw
STEPHEN
03-11-04, 06:38 PM
#15
You know years ago, I remember reading about how somone did a back to back dyno with a n1 dual tip vs. the single tip. The n1 made something like 450rwhp, and the RB dual tip was something like 25rwhp less. Don't qoute me on this or anything....but I remember reading something like this. Sorry for being so vague. CJ
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