best bang for buck- RP Cat or Unortho pulleys
Guys
Just trying to get a concensus here. My next mod will probaly be one of the two listed. RP cat goes for about $425 with gaskets etc and the Pulley set goes for about $250 uninstalled. I hear good and bad about both. Can't make up my mind. I have the RB catback but if the cat will give me another 8hp(as claimed) then it may win. But I cant find where the cat is giving 8hp or so consistantly. Same with the pullies--some like them and feel the differance--some dont. Would just removing the a/c belt(for track days) be just as good? Olddragger :scratchhe |
If you really want something that will have a performance gaing that you will feel. I will go with a final gear change.
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probably hi flow cat, you save on weight and get a small increase in power. I don't think pulleys provide any hp gains.
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od - I have them both installed. Definitely the high flow cat is the biggest bang. As for the pulleys, my throttle response is allot crisper now, and I find that the engine seems to rev easier. I like them both.
I currently have the REV8 installed, but she is coming off this weekend. :) |
FWIW, I would +1^^^^^
Nemesis, what are you getting? I am droping my REV8 soon, too. |
Did not say for fear of getting flamed, but I'm installing the RB Single.
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i unfortunetly can't say that i picked up any power with the RP cat
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Originally Posted by Nemesis8
Did not say for fear of getting flamed, but I'm installing the RB Single.
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ok 2 votes for the cat and slight ok for the pully's and one with didnt get nothing.
Hence my delimna--plus I cant spell Olddragger |
One works & the other one doesn't. This isn't a big V8 where you are removing a ton of weight in addition to massively underdriving the components (UR stated they are only undriving like 15%-20%). You are not taking out weight from a massive 15-20 lb. harmonic balancer. The pulleies together maybe add up to a few lbs.
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It's 11% on the eccentric shaft with the UR :)
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Originally Posted by Nemesis8
Did not say for fear of getting flamed, but I'm installing the RB Single.
RB mufflers must be damn heavy. |
so rp cat/pipe is the go ahead?-- can the seat of the pants feel the differance?
Olddragger |
For you Washington guys, maybe you should ask if the equipment comes with free rain tires for your car, or free scuba gear for yourselves.
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I could when I installed mine. I'd recommend it any day of the week.
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Originally Posted by olddragger
so rp cat/pipe is the go ahead?-- can the seat of the pants feel the differance?
Olddragger (Fanman - I think I am growing gills to breath lately) |
Ok then --sounds like I better tell my teenagers the bad news. No rolling stones concert for them--I'm a going to get the cat. Hope it sounds of with my rev8
OD |
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Originally Posted by dDuB
RB mufflers must be damn heavy.
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Thanks Nem--does change the decibels a little doesnt it? Sounds good to me. More of a "present and accounted for" tone!
Olddragger |
od,
Have you conversed with Charlie @ Mazcare on these options? If not, you may want to... |
rp cat over the pullys. pullys don't do anything
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well I've seen a number of dynos that say different, so which ones do you believe?
FWIW, SRMotorsports has their original pulley system on sale for $399, they recently came out with a new wide belt pulley system, looks like it adds two more ribs, they say 25% wider and prevents the water pump from slipping at high rpm |
Originally Posted by Nemesis8
Racing Beat Race Muffler is 17.5 lbs
For just the muffler yes, but he whole thing with feeder pipe is 26 lb, my custom one is 9 lb and I bet it's just as quiet on the sound meter, one of their issues is the use 0.065 wall tube (16 Ga) because it's readily avalable but it's really overkill for a stainless system, 18 Ga is plenty adequate for a street system and a race system can get away with 20 Ga, for serious race 22 Ga Inconel 625 will give the best weight/performance I'm presently building a street version with dual mufflers and tips as a present for a special friend that I think will come in around 16 lbs despite being stainless, should have it done within the next month |
Originally Posted by TeamRX8
well I've seen a number of dynos that say different, so which ones do you believe?
FWIW, SRMotorsports has their original pulley system on sale for $399, they recently came out with a new wide belt pulley system, looks like it adds two more ribs, they say 25% wider and prevents the water pump from slipping at high rpm |
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