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post #1 of (permalink) Old 11-15-2000, 10:02 PM
**DONOTDELETE**
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exhaust effect idle?

i have a buddy who just added a header and 2" exhaust to his efi 1.6l equiped samurai and now it won't idle correctly. it surges and he is perplexed as to why. does header and exhause cause this? he has checked everything else that he can think of and can't figue it out. any help would be greatly appreciated.

also why is the o2 sensor bung on the calmini header located only on the #1 exhaust port. would it not be better down near the collector where it can read from all 4 cylinders? just curious.

brian wilson
80 cj5 "high 5"
stretched to 100" wb
efi351w/np435/d300/d44/d60/detroits/4.56/35tsl's/
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post #2 of (permalink) Old 11-16-2000, 01:04 AM
JKing
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Re: exhaust effect idle?

Yes, exhaust size change idle speed...at least on mine. I change to 2 inch piping from mid muffler towards the back and moticed a slight dddrop in RPM but my idle is still fine. no erratic idle. Wish I had more money to put in a header though....

not sure about the o2 sensor 'coz we don't have emission control here in Malaysia..... at least for now.

JKing
Suzuki Samurai (SJ413 Jimny in Asia)
K&N Air Filter, Shackle Lift, Larger Than Stock Tires,Wheel Spacers, Driving & Spot Lamps, Gabriel Gas Ryder Shocks
Kuala Lumpur, Malaysia
post #3 of (permalink) Old 11-23-2000, 12:15 AM
psf4x4
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Re: exhaust effect idle?

i know what to do! fire up the sami, put your mouth on the exhaust pipe while your buddy revs up the engine. let me know how that went.

chris "psf"
87 sami/5.5spoa w/1"shackle/grs1/4:57/ez-locked
33tsl's
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post #4 of (permalink) Old 11-23-2000, 08:58 AM
**DONOTDELETE**
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Re: exhaust effect idle?

how long should i hold my mouth over it? i tried last night but i kept burning the crap out of my lips!lol!!! chris i'll just wait until you come to texas and i'll let you show me how!

brian wilson
80 cj5 "high 5"
stretched to 100" wb
efi351w/np435/d300/d44/d60/detroits/4.56/35tsl's/
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