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curios of the gain in hp to be had with a bigger tb,maf, and 1.8 roller rockers

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Old 03-04-2010, 06:20 AM
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Default curios of the gain in hp to be had with a bigger tb,maf, and 1.8 roller rockers

hey guys i've got a99 t/a ws6 with full bolt ons, intake and exhaust, and wanted to try a few more because i'm not quite ready to get into a motor build yet. i've got a k&n fipk,polished stock tb, and a bbk ssi intake. on the exhaust side i have pacesetter long tubes, off road y-pipe, and a flowmaster cat back. also an underdrive crank pulley. the car makes 343 rwhp thru an m6 and moser 9 in. i wanted to add a shaner s3 tb, slp 85mm maf, and a good brand of 1.8 roller rockers to take advantage of the extra air coming in. it would be retuned also. am i wasting my money or could 20-30 extra hp really be seen by these up grades?
Old 03-04-2010, 06:38 AM
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You wont gain much over the ported stock TB, probably nothing from the maf and maybe a few from roller rockers by themselves...I think your looking at 5-10 hp at most and I think thats generous.
Old 03-04-2010, 06:51 AM
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really... i've read articals where they've picked up 20 hp at the wheels alone just from comp's 1.85 rockers.
Old 03-04-2010, 06:57 AM
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man i kno ur gonna hate hearing this but do a cam/head swap or even just cam only. u will see a lot more gains when u let the internals breath than adding a maf. the maf is really good up until 500 hp so no need to change what u dont have to. like said before only marginal gains to be expected with other bolts ons. u need to think about internal work and a cam swap really is only about a 700-1000 if its done by someone
Old 03-04-2010, 07:05 AM
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the motor has about 110,000 mi on it and i plan on rebuilding it from top to bottom next year. i just figured these parts could be used on it once its rebuit and could net me a few ponies in the mean time to hold me over till next season
Old 03-04-2010, 08:46 AM
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Unlike LT1's, LS1's dont gain much from aftermarket RR's....most dont even change them w/ heads/cam swaps...id be more focused on swapping the stock cam out rather then RR's.
Old 03-04-2010, 09:27 AM
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ditch the chokemaster catback
Old 03-04-2010, 09:42 AM
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I noticed a slight difference when I eliminated my Flowmaster and replaced it was a magnaflow. It is now quieter which I am not a huge fan of, but I did initially feel a difference.




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