AP Stage 1 Cobb 93 - Overboost/Cyl4 misfire?

solovus · 05-03-2008, 01:52 PM

Okay. So I went stage 1 yesterday and I have had some issues. When I am not having issues the car is spectacular, however I want to know if anyone else has these issues?

If I am in neutral and rev then occasionally I will throw a P0304 code: cylinder 4 misfire detected.
Note: This is no longer repeatable. I am going to try some more right now.
Edit: Still can't get it to repeat...hopefully it is gone for good.

I was driving it -really- hard and I pulled a P0244 code with a bunch of lights.

Has anyone else had any similar problems?

Although I would be upset to lose the motor...it would make it much easier to convince my wife that I need an "improved" motor.

bklynpanman · 05-03-2008, 03:04 PM

i've had the p0244 code as well as a bunch of other people.. i switched to the perrin map and had no problems

threader · 05-03-2008, 04:07 PM

Quote:

Originally Posted by bklynpanman

i've had the p0244 code as well as a bunch of other people.. i switched to the perrin map and had no problems

2nd that. Perrin slightly less boost and never hit 18 but always 17.something
The Cobb always hit 18 but the P0244 just does not make it worth the trouble. Honestly the difference between Cobb and Perrin 93 map is neglible.
So glad I bought my AP from Perrin and had a free alternative for 93 oct. map from Cobb 93 map

solovus · 05-03-2008, 05:49 PM

Quote:

Originally Posted by threader

2nd that. Perrin slightly less boost and never hit 18 but always 17.something
The Cobb always hit 18 but the P0244 just does not make it worth the trouble. Honestly the difference between Cobb and Perrin 93 map is neglible.
So glad I bought my AP from Perrin and had a free alternative for 93 oct. map from Cobb 93 map

I think I will switch to the Perrin map then.

bklynpanman · 05-03-2008, 05:52 PM

With the Perrin map I hit almost 19 but I never throw the codes.

threader · 05-03-2008, 06:34 PM

Quote:

Originally Posted by bklynpanman

With the Perrin map I hit almost 19 but I never throw the codes.

How do you read 19? Thought ECU max readout was 18.4

Got a gauge? My ap never hits 18. nada

paikman · 05-03-2008, 06:50 PM

this is from my dyno result, boost hits 18.9 max on cobb

**Digitalfiend** · 05-03-2008, 06:58 PM

Quote:

Originally Posted by threader

How do you read 19? Thought ECU max readout was 18.4

Got a gauge? My ap never hits 18. nada

If you read the "manifold absolute pressure" value, I believe you can calculate above 18.4 by subtracting 14.7 (though this value can fluctuate slightly).

05-03-2008, 01:52 PM	#1
solovus The Next Petter Solberg Car: STIzzle Fav Mod: Tint Location: Toledo, OH Posts: 996 Join Date: Mar 2008 Trader Rating: (0)	AP Stage 1 Cobb 93 - Overboost/Cyl4 misfire? Okay. So I went stage 1 yesterday and I have had some issues. When I am not having issues the car is spectacular, however I want to know if anyone else has these issues? If I am in neutral and rev then occasionally I will throw a P0304 code: cylinder 4 misfire detected. Note: This is no longer repeatable. I am going to try some more right now. Edit: Still can't get it to repeat...hopefully it is gone for good. I was driving it -really- hard and I pulled a P0244 code with a bunch of lights. Has anyone else had any similar problems? Although I would be upset to lose the motor...it would make it much easier to convince my wife that I need an "improved" motor. This ad is not endorsed by this member. Please register or login to hide this ad. Last edited by solovus : 05-03-2008 at 02:40 PM.

05-03-2008, 03:04 PM	#2
bklynpanman Junior STI Driver Car: 08 STI WHITE ! ! ! Fav Mod: Coming Soon Location: NJ Posts: 170 Join Date: Dec 2007 Trader Rating: (0)	Re: AP Stage 1 Cobb 93 - Overboost/Cyl4 misfire? i've had the p0244 code as well as a bunch of other people.. i switched to the perrin map and had no problems

05-03-2008, 05:52 PM	#5
bklynpanman Junior STI Driver Car: 08 STI WHITE ! ! ! Fav Mod: Coming Soon Location: NJ Posts: 170 Join Date: Dec 2007 Trader Rating: (0)	Re: AP Stage 1 Cobb 93 - Overboost/Cyl4 misfire? With the Perrin map I hit almost 19 but I never throw the codes.

05-03-2008, 06:50 PM	#7
paikman Professional STI Driver Car: 2008 OBP STi Fav Mod: Advan RS 18x9. TurboXS downpipe. Location: VA Posts: 463 Join Date: Jan 2008 Trader Rating: (0)	Re: AP Stage 1 Cobb 93 - Overboost/Cyl4 misfire? this is from my dyno result, boost hits 18.9 max on cobb