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Old Oct 5, 2025 | 03:51 PM
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I have recently installed ARH 1-7/8 headers with a 3" catted y-pipe to a 2.5 " Borla Atak exhaust . 2011 GS 6M, Haltech heat shield, MGW shifter. I've had it tuned and achieved 420 Hp and 400 lbs of torque. Is there any other "performance upgrades" I can do without opening up the engine (Heads, cam).
Ported intake? I do not race my car, It's my hobby.
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Old Oct 5, 2025 | 05:21 PM
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Rod-mod intake is worth a few hp.Mine gained about 12 but I have a cam also.
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Old Oct 5, 2025 | 06:29 PM
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Yeah, I'm looking into doing that.
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Old Oct 5, 2025 | 08:47 PM
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Yeah fast or msd intake.. and depending on your definition of opening up the engine you could put 1.8 rockers on instead of the 1.7's
Would be like a very mild cam and give you more lift and duration at 0.050 by roughly 5.8% (1.8/1.7)
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Old Oct 5, 2025 | 10:28 PM
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What's a good 1.8 rocker?
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Old Oct 14, 2025 | 05:44 PM
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Plenty to think about. Now I have some research to do!
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