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  1. #11
    Member 230 Rep Points Krug's Avatar
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    I would still recommend wrapping/coating your exhaust if you ever have the inclination. If you ever swap your turbo, that would be the perfect time to do so. Get a turbo blanket, too! Besides less heat being radiated from the exhaust/turbo, there absolutely are some performance benefits to doing so.

    Not exactly related to this thread, but this has reminded me of the recent exhaust replacement I helped a friend with, on his R53 Cooper S. Besides the Borla catback system we installed, he had also selected long tubular headers that included a resonator that was more-or-less the same size and shape as the catalyst, but placed just slightly further back. I thought it was rather cheeky that they included a resonator like that. If nobody knew any better, it'd look like that portion was a stock system.

  2. #12
    Senior Member 398 Rep Points danbfree's Avatar
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    Quote Originally Posted by Krug View Post
    I would still recommend wrapping/coating your exhaust if you ever have the inclination. If you ever swap your turbo, that would be the perfect time to do so. Get a turbo blanket, too! Besides less heat being radiated from the exhaust/turbo, there absolutely are some performance benefits to doing so.

    Not exactly related to this thread, but this has reminded me of the recent exhaust replacement I helped a friend with, on his R53 Cooper S. Besides the Borla catback system we installed, he had also selected long tubular headers that included a resonator that was more-or-less the same size and shape as the catalyst, but placed just slightly further back. I thought it was rather cheeky that they included a resonator like that. If nobody knew any better, it'd look like that portion was a stock system.
    Great idea! If I do end up doing the turbo upgrade I'll ceramic coat the DP and ported manifold for sure...
    '17 Magnetic - black wheels/red calipers - New Feb, '18.
    Tunes: Dizzy V2 e30/93 with Cobb TC at 3.
    Performance: Drop-in filter w/shroud cut, upgraded crossover and turbo inlet, symposer delete and hotside J pipe, TurboSmart VR2 electric recirc DV, 18" glasspack muffler swap with 9" resonated DC Sports black tip, step colder plugs.
    Mounts/bracing: Torque Solutions 75a RMM, Powerflex Street engine upper side mount inserts, TB Performance Traction Bar
    Interior: Mojo Mfg short shift plate, Savanini ball shift knob, upholstered leather padded arm rest.
    Lighting: Techmax proper reflector LED low beams, DeAutoLED bright white reverse and trunk LED's
    Next Steps: Intercooler, induction hose, tint, Eibach springs, hybrid, seats

  3. #13
    Senior Member 316 Rep Points Sekred's Avatar
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    Quote Originally Posted by danbfree View Post
    How did you hook up the O2 sensor and what tune did you have? From what I understand, whether you go catted high flow or catless, you either need to do a defouler spacer on the O2 or have it turned off in your tune... Anyway, I was assuming from the start I'd have to do this if I moved the catalyst further back with either an extension to an O2 sensor or just have it turned off in my tune anyway, but thanks for confirming your experience. After seeing more and more how the stock exhaust is so not restrictive pretty much at all, I don't think I'm going to bother with any more exhaust mods at all at this point.
    The O2 sensors were in the same place as the OEM down pipe, no tune at the time.

  4. #14
    Senior Member 398 Rep Points danbfree's Avatar
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    Quote Originally Posted by Sekred View Post
    The O2 sensors were in the same place as the OEM down pipe, no tune at the time.
    OK, that totally makes sense then, if you used a defouler spacer along with high flow cats then you may not have triggered a CEL at all even without a tune.
    '17 Magnetic - black wheels/red calipers - New Feb, '18.
    Tunes: Dizzy V2 e30/93 with Cobb TC at 3.
    Performance: Drop-in filter w/shroud cut, upgraded crossover and turbo inlet, symposer delete and hotside J pipe, TurboSmart VR2 electric recirc DV, 18" glasspack muffler swap with 9" resonated DC Sports black tip, step colder plugs.
    Mounts/bracing: Torque Solutions 75a RMM, Powerflex Street engine upper side mount inserts, TB Performance Traction Bar
    Interior: Mojo Mfg short shift plate, Savanini ball shift knob, upholstered leather padded arm rest.
    Lighting: Techmax proper reflector LED low beams, DeAutoLED bright white reverse and trunk LED's
    Next Steps: Intercooler, induction hose, tint, Eibach springs, hybrid, seats

 

 
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