Check Engine advice

[FirechickenV8]

So I just picked the 2000 WS6 up from out of state and half way thru the drive home the check engine light came on. I just had the codes read and there was a knock sensor problem and 2 lean fuel codes, supposedly the MAF and possiblly O2 sensor. The car had a mild comp cam, LT hooker headers, no cats, flowmatser exhaust, LSX intake with LSX 90mm TB. The plugs and wires were just changed before I picked her up. If anyone has any ideas on this problem please give me some input. Greatly appreciated

Chris

[0rion]

Sorry to hear about that. Post up the codes. Was the car tuned and by who?

[2l8tiwin]

hey i got the SAME problem with my 2000 ws-6 but i did all the mods in it and funny enough i also have the lsx intake and 90mm t-ody and headers and also just added msd coil packs wth the 8.5 mm wires and a granatelli maf.
and the problem only came after i added the intake.. its reading bank 2 running lean. i changed the o2 sensor and it did nothing for me we thought also maybe a fuel filter but did nothing also. have you found te problem? i was told that the 200 and up fuel injectors were changed to a smaller psi injector from the 1999 and lower models and was told that might be the problem and was told to check my fuel trims i will be doing that this week i will keep you posted. we are not the only ones with this problem and eveyone elses problem began when the intake went on.

[FirechickenV8]

I have just cleared the codes and as of yet they have not returned. My possibly thoughts were MAF b/c of the 90mm TB and possibly the fuel injectors like you stated. Its being takin in Thurs to a local performance shop, definately keep me posted on your findings, I would hate to drop all that money and not solve the prob. Good luck and keep me posted

[FirechickenV8]

Car was dyno tuned and tested before I purchased. Not positive where or by who. I was wondering what size injectors I should go with, also any other ideas of possible upgrades for the power?