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Jun 23, 2022 | 02:19 PM

#11

gDMJoe

Senior Member

Joined: Nov 2010

Posts: 11,854

Likes: 2,559

From: Timbuk3, MI

Quote:

muddledlizard... They are saying it's my CAI, it's sucking too much air. I've had the CAI on for almost two years now with no obvious problems. I installed that shorty after I purchased my pickup. Has anyone seen a problem like that? Could that have caused my CAT to go bad in the first place? I just got done driving it for about 30 minutes and the light is back on.

If the CAI is allowing unmetered air to enter the intake, there's also (besides the exhaust manifold leak) your gonna-cause-a-problem (running lean) issue.

What CAI is installed?

And, as long as there's asking... What other modifications are there?
.

Last edited by gDMJoe; Jun 23, 2022 at 02:22 PM.

Jun 23, 2022 | 03:24 PM

#12

muddledlizard

Thread Starter

Junior Member

Joined: Jun 2022

Posts: 4

Likes: 0

Quote:

Originally Posted by [F2C]MaDMaXX

The engine sucks in as much air as it needs, you can't 'get too much air' in there unless you're using a super charger or turbo. Nothing a "CAI" does/allows will cause any change in how much air the engine sucks in.

Quote:

Originally Posted by Laminar

Unless the CAI is messing up your MAF signal, the ECU will account for any and all air coming into the engine.

That is what I thought. I recall reading that there is a sensor that measures the air and allows it to enter. No tuning required. Previous experience was you needed a tune when installing a CAI.

Quote:

Originally Posted by gDMJoe

It's a KN. No other mods besides that one. I fell into a good price so I figured I'd try it out.

I just got a scan tool to look at live data. At idle what should I be seeing for S1(up) and S2(down)?