saleen coupe

first off do i have to hace a chip to correct this and this problem started with all cylinders and after playing with the timing and moving the timing back to where i started the problem cut down to #1 and #8 cylinder and i have did all that i know to do that is why i'm such need of help.

mattdel

you shouldn't need to purchase a chip, just get a dyno tune. chips are junk.

anyway, you should be able to correct this problem without tuneing it. Did you do any fuel mods to accompany your H/C/I ?

saleen coupe

no i didn't do any fuel mods thats all stock i thinking of getting some 24lb injectors but do i need a bigger fuel pump to go with these injectors if i get them.

HACKGT350

you both are right it could be either one. the fiero i worked on(hell on wheels) was running way lean at about that rpm. we had an a/f ratio wideband on it and the headers both sides went completely read and the heat rap started smoking it was crazy i thought the freaking thing was gunna blow up in the show i could feel the heat through the fire wall

AdderMk2

http://racingarticles.com/article_racing-56.html


7.) Glowing headers mean the engine is lean – This wives’ tale is starting to lose steam, but still believed more often than not. Headers glow red for only one reason, there’s fuel burning inside. The two main reasons are a rich mixture and late ignition timing - which doesn’t give the fuel enough time to burn inside the combustion chamber. Test it for yourself, let your engine idle and crank the ignition timing back to the point where it barely runs, then get out the marshmallows.

HACKGT350

well i guess the a/f ratio gauge was wrong it was pegged lean and as soon as we played with the timing it moved up richer and the headers stopped glowing

AdderMk2

if you overheat an O2 sensor.. it reads lean

HACKGT350

well that makes sense then ok ill take your word for it

ZachW04Stang

Headers only glow red from timing or extreme rich. Exhaust will glow red when cats are clogged and an extreme lean condition but it starts at the cats and works its way to the manifolds.

saleen coupe

so obviously your saying i'm getting too much fuel and i have had the timing as much as 19* and still got red at #1 and #8 cylinder so moved it back to 14* same results so what do you guys suggest that i do the reason i ask about a chip is because a local mechanic said it will never get any better until i have someone customize a chip for me, what do you guys think. i'm ready to do anything its a brand new rebuilt motor with only 100 miles on it and i'm scared to drive it anymore until this is straightened out.