CAI and tune caused some codes

gmantheman · Jun 9, 2008

I installed my JLT and 89 tq tune from Bamachips today. I drove the car for about 2 miles and the check engine light came on. I ran a diagonsitc and came up with these codes P0171 - System too lean (Base 1)
P0174 - System too lean (Base 2)
P1000 - OBD Systems Readiness
I cleared the codes and then drove home. On the way home the car shut off while making a turn. I turned the car back on and proceeded to drive home. I re-checked for trouble codes, but no codes were found. I re-checked the CAI and all connections were tight. Has anyone else had the same problem when they first installed the CAI and tune?

DarkFireGT · Jun 9, 2008

If you checked all connections after the MAF and have no leaks, email Doug and let him know what codes you're getting. He'll get you fixed up. Every car is different.

gmantheman · Jun 9, 2008

I will drive the car again then re-check both for codes and connections. If I get any codes I will give Doug a call.

gmantheman · Jun 9, 2008

re-checked again after running the driving the car for a few miles. No codes were found. I assume everything is okay.

PSYKOSTEVO · Jun 9, 2008

The P1000 is nothing to worry about.

The other two are just due to either a leak in an improperly installed intake, or a tune that is not properly setup. Maybe the tune does not match the intake you are using.

JOEGTS · Jun 9, 2008

The 171 code is often caused by having oily, dirty residue on the air flow meter. I would pull it out and clean with electrical parts cleaner or brake clean. There is a much greater amount of air coming across it now.

gmantheman · Jun 9, 2008

I'll spray some electric/computer cleaner on the sensor. The tune should match the intake. I ordered the CAI and the tunes from Doug. The tune option he sent me does say JLT, which is the intake I have.

JOEGTS · Jun 9, 2008

I would give him a call either way and also make sure you have no unmetered air getting in.

gmantheman · Jun 9, 2008

After checking it again, I notice that the inlet tube connecting to the elbow as loose. I forgot to put a clamp on that section. Basically I took the intake apart and put it back together again, making sure everything was tight.

PSYKOSTEVO · Jun 10, 2008

Well there you go! Easy fix!

DarkFireGT · Jun 10, 2008

Good. Most of the time, it's either a leak after the MAF or dirty MAF sensor.

FR-S8N · Jun 10, 2008

I also had a code. It was idle RPM too low. I just adjusted it with the SCT x3 and check engine light turned off.

No problems since , and this has been the only bad thing happen.

PSYKOSTEVO · Jun 10, 2008

You normally don't have to raise the idle. It may have just been idling a little "off" since there was a leak in the intake arm.

gmantheman · Jun 10, 2008

After driving the car for about 70 miles, I re-checked for trouble cods. No codes were found. Everything seems ok.

NastyStang113 · Jun 10, 2008

Sounds good. At first I was worried that you got a bad tune but that didn't sound like Doug. However everyone makes mistakes.

JOEGTS · Jun 10, 2008

How does the car drive with the tune. I don't think I could go back to the way the car drove before the tune.

gmantheman · Jun 10, 2008

It is much stronger compared to stock. For about 3 months I was only using Doug's 89 tq tune and no CAI. Just yesterday I received and installed the JLT w/updated tunes. I am using an updated 89 tune. With the addition of the intake, I feel a slight increase in power.

NastyStang113 · Jun 11, 2008

JOEGTS said:
How does the car drive with the tune. I don't think I could go back to the way the car drove before the tune.

When I first got my car, I installed a 93 octane tune with the stock intake. It was a pretty noticeable gain but when I added the C&L with 88mm maf tube and new tune, it was like a whole new car !! My car was putting down 290 rwhp and 302 rwtq with just a VMP 93 octane tune and C&L with 88mm maf tube. Regardless of muffler or no muffler, there was no power difference. Now that I've added CMCVs and UDPs, I'm at 302 rwhp and 318 rwtq.

gmantheman · Jun 11, 2008

I am interested to see what I dyno now with an intake a tune. In April I dynoed with just the canned 87 tune and steeda udp. The avg of three pulls was 282 rwhp/ 300tq. Last month I dyoned again, but at different dyno. At the time I had Doug's 89 tq tune and no CAI the avg of two pulls was 280 rwhp/300 tq. I am thinking the reason why I got higher numbers with canned tune is because I dynoed in the evening. When I dynoed with Doug's tune it was during the day. Another important thing is that it was two different dynos.

PSYKOSTEVO · Jun 11, 2008

gmantheman said:
I am interested to see what I dyno now with an intake a tune. In April I dynoed with just the canned 87 tune and steeda udp. The avg of three pulls was 282 rwhp/ 300tq. Last month I dyoned again, but at different dyno. At the time I had Doug's 89 tq tune and no CAI the avg of two pulls was 280 rwhp/300 tq. I am thinking the reason why I got higher numbers with canned tune is because I dynoed in the evening. When I dynoed with Doug's tune it was during the day. Another important thing is that it was two different dynos.

The MOST important factor is that you were at a different dyno.

CAI and tune caused some codes

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