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I know. But the traditional route gives you nearly no gain (maybe 5 horses) and cost 1500 for nothing except noise. The RS2 gives you real gains for a few bucks on top. Now do the maths and calculate the bang for buck rate. The RS2 would also give you more gain for your money than an itb setup...
^No way you´ll get in the 190s with a Maxogen, exhaust and remap. You´ll get 250bhp on the AMD rollers.... I think in this thread is also a lack of mathematic and reading skills. So guys: if you never learnt to compare graphs or do basic mathematic operations in school => Post tits or GTFO!
Does it have the 182 4 in 2 in 1 manifold, too? Then you would need a 182 decat pipe as the 182 manifold is longer. If not there must be some serious welding going on your exhaust piping to make a 182 catback fit a 172 cat. Pictures from below needed!
Is it a real 182 system with central backbox (spare wheel well removed?) or a 182 look-a-like system? Post cat flanges are normally not compatible between 172s and 182s.
If you compare the standard graph and the RS2 graphs, you can see a good gain in low down torque, about 145 lbft at 2.5krpm staying nearly constant until 6.5krpm (standard about 125@2.5krpm, peaking in about 150 @5krpm and then dropping to 130 @6.5krpm). I would not take the second graph as a...
A valve!? If a valve would be damaged you´d have more problems than misfiring. I´d say lambda issue because you say it misfires between idle and 4k and this is the closed loop window.
So you are the guy with the old inlet setup. That´s mainly why JMS revised it!? Sounds like a bad experience. Hope that everything is sorted now with the kit.