Hi everybody, I'm new to this forum and I need help. I had an INJEN CAI installed with an AEM bypass valve. During the installation, the MAF was accidentaly dropped on a table. After installation was done, the "service engine soon" light came on. We tried re-setting it 3 times and it wouldnt go off. I started the car and I can actually rev the car (while it was in P) passed 4500 rpm and sounded really nice. Anyways, I then took the car out for a drive...acceleration was great and exceeds 5000rpm. Here's comes the problem, I went onto the freeway going 70+mph and floored the gas trying to speed up and it wouldnt. I can hear the intake groan but the rpm gauge was only at 2800rpm and wouldnt go any further....so, did the MAF gone bad? or was it something else? Before the intake installation, the car would speed up no problem on the freeway and have never floored it. Any help would be greatly appreciated. Thanks!

Shogunsc4

 

if you cant rev above 2800 then the maf is bad. you can switch back to stock and attempt to have it replaced under warranty or you can purchase one from dave b here and do it yourself. what year max do you have? 2k2? maf sometimes act up before they die and that may have been what triggered the light then at full throttle on the highway, it just gave out.

 

Hi, the weird part is that after i got off the highway, i was able to rev over 4000rpm again on accelerations multiple times...just that i cannot get the same pull i used to get with the stock air box at higher speed...Hmm...I'm frustrated.

 

some like the injen and some dont. it does have longer piping than the stock air box and it seems like it would take pretty warm air coming off the radiator. not that intakes like frankencar dont take warm air in but the injen is much closer to the radiator. i know what the bypass valve does but ive never installed one. i would make sure it is not obstructing air flow and also check to mail sure the filter is tight on the piping. even with its downsides, the injen shouldnt feel weaker and it definetely shouldnt keep you reving at any speed.

 

Who sells these MAF's and how much? Are they aftermarket or stock.

Thanks

 

maf blown, put car back to 100% stock, roll to dealer. Have MAF changed along with MAF/Hesitation TSB done. End of problems.

 

to my knowledge, nissan is the only who produces. they have not been realeased to other part manufactuers like gp sorenson so getting them from the dealer is the only option right now.