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a while back there was a thread on home made eliminators how can i find thtat or can somone tell me how,,,99 cobra check eng. light on have no cats .when light is on does it effect the way your motor runs?? does it effect timing or anything??

i have a noise right after shutting car off it is like a buzzing sound for about 4/5 seconds. a/c is turned off by the way.

99 cobra,mods are,,mac l/ts headers no cats,,62mm. t.b.,,pulleys,,stock air filter housing with k/n/ filter,, had dynoed at 298 rwhp.need i little more h.p....what type if any air mass to get?? cold air kit ?? computer chip?? what...

guys iam sorry never ran my car will you still help me?about those gears i swaped them to 3.73s you were right ,,now car feels that it has no gears? you guys know your stuff please help have irs still,3.73. gave me wheel hop bad ,,4.10s didnt for real, i have some 4.30s to you think i should go...

what do you think 99 cobra ,,with mac crap long tubes my results 51,000miles,.compression 170/175 per cyl. leakdown follows #1-11% #2-8% #3-3% #4-11% #5-12% #6-4% #7-5% #8-9% car uses 6qts.in 1500miles,no sign of oil on plugs,car smokes real bad when you get on it,also after driving...

99 cobras have more compreesiom than 2V motors .how much boost can i run wityh stock interals, my car has those damm mac l/t/ my have to go into my eng sould i get dished pistons our stay with flat tops. dished pistons will give me less comp. it will be dogger before the boost comes on...

i want to hear from people who got screwed buying these headers ,what happened to your car.and what you had to do to fix it ,talking about the dohc.longtubes from mac.and what your car was doing?

my 99 cobra i installed 4.10 gears not pleased at 3000rpms im going 82 mph. i drive at least 80 on interstate and that a littlt to much rpms for my liking cant go on long trips anymore ,wsa wondering does anyone have the same car but with 3.73s to tell me how many rpms you are doing at 82 mph...

maclongtubeheader question what do you think 99 cobra with headers listed im smoking real bad it full throttle using oil compression is 170/175 on all cylinders, was wondering if i changed back to stock manifolds would this proplem stop? car never smoked or used any oil before this change ...

have 99 cobra 51000mi. comp. good 170/175 psi plugs look good no signs of oil car didnt smoke before header swap? mac long tubes has anyone had proplems with these headers? plese let me here from you ,,going crazy help!

i have 99 cobra 51000 miles installed mac l/t/headers car smokes now using lots of oil 4qts. in 1500mi. or less. compreesion is good 175/170 on all cylinders only smokes when i run it farly hard . i heard things about these headers .plugs have no signs of oil .i change to sync.oil at the same...