i just installed a irs restrictor on my car so the rpm would lower faster when i shift i was wondering if it is badd for my car and will i loose/gain any hp?
It's not called the IRS, IRS=Independent Rear Suspension. It's called the IAC=Intake air control. I put one on my IAC and didn't notice that much difference. Def nothing to do with HP gain or loss. You really need to disconnect your battery for a few minutes when you do stuff like that so the computer can relearn itself or else it will act funny. Mycar still has it in there.
Posts: 569
Joined: 3/1/2007 From: Napa CA Status: offline
My IAC got blocked up completely from my cold air and the car kept stalling.
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1996 gt with 4v swap , Visteon racing radiator, BBK coldair, Flowtech x pipe ,Steeda side exhaust, spec stage II , Nitto NT-01''s and motive 4.30''s 282 Rwhp 274Rwtq
The IAC lets your car idle when the throttle is closed. It allows air into the engine through a motorized valve to control air flow.
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Red 99' cobra coupe mods: JLT CAI, BBK catted x-pipe and magnaflow cat back, MGW short throw shifter, 10th anniversary svt rims, lowered, BBK 65mm throttle body, TKO-600 trans In the family: 67' Mustang coupe 289ci 69' Mustang Grande 351ci