i just put in the weapon r secret weapon intake, it threw me a cel. pretty sure i did everything right, let it idle for like 10 minutes also. anyone got anyone suggestions other than saying that they think weapon r sucks-i already bought it, so that wouldn't do me any good hearing it.

Did you wipe out the insides of it before installing? I don't know about this one specifically, but I've heard some intakes have a slight coating of oil inside and this can foul the MAF sensor. You could try cleaning the MAF with some cleaner made for electric parts and wipe the inside with a clean cloth.

Someone else had this problem recently. I think he contacted weapon r directly to find out how to fix the problem.

after you let it idle for 10 mins... did you drive it hard afterwards?

i reset the ECU and let it idle for 20 minutes, and after 45 miles, so far it seems to be working ok(no CEL). hopefully that's the problem-i didn't idle long enough for the ECU to get used to the extra air flow.

hope it works
good luck

just got the CEL again. worked for 100 miles, and back on again. i just added the TRD intake(props to NYCAZN-for the ill hook up) and it went for 100 miles and came back on. i found out the the code is for the engine being LEAN. anyone have any ideas how to fix this?

the code was P0171 - system too lean.

We recently had a minor redesign to fix a lean condition CEL. Contact me about getting this issue corrected.

We recently had a minor redesign to fix a lean condition CEL. Contact me about getting this issue corrected.

I just got a Weapon R Secret Weapon intake installed it on the 18th. I have put at least 130 miles on it and have no cel. The only thing I noticed is where the maf sensor installs the o-ring seems small on the intake, it might need a little thicker o-ring. This might fix your problem.