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tony_c · 09-07-2009, 08:35 PM

OK, I installed the ARH headers (w/cats and left factory mufflers), New Era CAI and a tune to my SIM L99. I don't have a bare bones dyno report, didn't have time to get it before my bolt-ons. So, before my tune but after the bolt-ons the DynoJet dyno said it had 345 rwhp. My tuner was only able to get it to 354rwhp. That's it.

So, should my L99 be showing more HP with the boltons it has? If you believe the HP ads on the ARH (40+), New Era ( 18 +-) and let's say +15rwhp for a good tune, we're up to around 473 at the engine. Running 93 octane and pulled the fuses to reset the comp weeks before the tune. So, is it loosing 25% of its HP before it gets to the RW to show the max 354rwhp. I'm NOT a mechanic by any means. I'm just looking at the numbers.
Is this about right or is something off?
Would appreciate any and all comments. Thanks.

09-07-2009, 08:35 PM	#1
tony_c Drives: 2010 Camaro 2SS, 2010 Equinox LTZ Join Date: Oct 2008 Location: Wheatfield, NY Posts: 311 View My Garage	Should my L99 be showing more RWHP? OK, I installed the ARH headers (w/cats and left factory mufflers), New Era CAI and a tune to my SIM L99. I don't have a bare bones dyno report, didn't have time to get it before my bolt-ons. So, before my tune but after the bolt-ons the DynoJet dyno said it had 345 rwhp. My tuner was only able to get it to 354rwhp. That's it. So, should my L99 be showing more HP with the boltons it has? If you believe the HP ads on the ARH (40+), New Era ( 18 +-) and let's say +15rwhp for a good tune, we're up to around 473 at the engine. Running 93 octane and pulled the fuses to reset the comp weeks before the tune. So, is it loosing 25% of its HP before it gets to the RW to show the max 354rwhp. I'm NOT a mechanic by any means. I'm just looking at the numbers. Is this about right or is something off? Would appreciate any and all comments. Thanks. __________________ 2SS/SIM L99 added: New Era CAI, ARH LT's, HP tune, side SS badges, SLP Hood & Spoiler and gill stripes, Painted extended Black Rally Stripes Last edited by tony_c; 05-12-2010 at 12:01 AM.