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Engine Tech Technical discussion related to all relevant engines such as KA, SR, RB, CA, 2JZ , L24/26/28, VG, VQ, and LSx series.


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Old 01-21-2013, 06:57 AM   #1
Slide518
 
Join Date: Jan 2013
Location: Niskayuna ny
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Redtop sr20 rough idle

New to the 240 world, recently purchased an s13 with an sr20det redtop.
5spd, safc2, MBC, front mount, exhaust and intake.. Haven't messed with the safc yet, but the cars running a little funky.
At idle it stumbles a little, stays around the same rpm so i don't think it's the iac, and if I stay out of boost it'll stumble almost like its loading up with fuel or an erratic misfire..
I have an air fuel ratio gauge and it seems about right,
11.5 in full boost and around 13.2 at idle, 12.5-8 cruising. Car also has a 255 Wally.
I checked all of the vacuum hoses and replaced a bunch, still no fix. Any help is much appreciated!!!
Thank you in advance!


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