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I was reading on a forum of Ford mustangs and found out that they did something to the IAC to makes the engine revs down quicker, called the IAC restrictor mod. I am curious about this mod. I would like to try it on my engine to see if it helps. The trick is to restrict the IAC hose.
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:festiva: 1995 Kia Pride, 1.3 EFI, manual. :fred: -
The computers in the mod-motors are programed to inject the extra air when you let off, so you don't get a fuel rich condition. It's an emissions thing. I don't think we have that problem with our Festivas, at least I don't.
Actually, I really don't have much of a problem on my '04 GT either. It will hang the RPM slightly when you let off to shift, but I'm used to it. Some Stangs do it worse than others. The only advantage I can see to restricting the IAC is that it will let the exhaust "cackle" when you let off.
On the flip side, it can cause the MIL (CEL) to come on.Brian
93L - 5SP, FMS springs, 323 alloys, 1st gen B6, ported head & intake, FMS cam, ported exhaust manifold w/2-1/4" head pipe.
04 Mustang GT, 5SP, CAI, TFS plenum, 70mm TB, catted X, Pypes 304SS cat-back, Hurst Billet+ shifter, SCT/Bama tuned....4.10's & cams coming soon
62 Galaxie 2D sedan project- 428, 3x2V, 4SP, 3.89TLOC
1 wife, 2 kids, 9 dogs, 4 cats......
Not enough time or money for any of them -
I am willing to try it. The question is, where to put the restrictor? Before the IAC (where there is a hose connected to the air cleaner hose) or after the IAC (where the IAC is connected to the intake manifold or plenum?
Thanks:festiva: 1995 Kia Pride, 1.3 EFI, manual. :fred:Comment
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Get a lightened flywheel if you want to speed the rev's up/down
It's a good thing you don't read the stickies, you might of learned something.
Poverty produces creativityComment
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to get it to rev down quicker there is something you can do... there is a little round thing by the throttle cable on the throttle body... about the size of a dollar maybe a bit bigger... it holds the throttle open for a sec to make it not run rich and also to make shifting easier for the slower shifting people... take it off and see the diffrence, i like driving with out it but it dose take some getting use to... if you let off the throttle to quick and dont push in the clutch it kind of jerks.... try it and see
Mike, AKA the sasquatch
1990 LX, bp+T/g25mr, 9psi dynoed at 194HP, turbonetics t3/to4e 57trim, haltech E6X standalone, 550cc injectors, turbosmart wastegate, synapse BOV, walbro 255 fuel pump, aeromotive FPR, AEM wideband, 3 inch exhaust, huge FMIC, 9LB flywheel, 6 puck clutch and way more parts that im forgetting i installed lol...Comment
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Dashpot
That piece is called the dash pot and is there to keep the throttle plate from slamming shut. Removing it can cause some problems like a jerky pedal when coming off idle since when the plate slams with vacum it can become stuck.1996 Aspire, 2DR 5SPD 185 60 14, Aluminum rims, Mild Stereo system, some neon tubes, 185 000 km not a speck of rust runs like a champ
B8-ME Swap COMPLETED.Comment
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x2 I just adjusted mine down a little bit made it much betterOriginally posted by krustyguitar View Post1991 Festiva B8 swap, gutted, otherwise stock-9.88@70
1974 MaverickLSX powered - 7.08@94Comment
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