Audi s3 stage 2+ down on power

[jonathon 242]

Hi I’m new to the group. Hopefully you can help me with the problem I’ve got. I have a Audi s3 stage 2 plus. When I got it mapped last year it was running 360bhp but now it’s lost power, its around 300bhp. no fault codes. Seems to be running fine and boosting as it should do. Any advise would be great. Thanks John

 

[S.]

What map do you have?

 

[Daveyonthemove]

Checked the DV ?
Mine had a split and was down about 60bhp and had no fault codes.

 

[jonathon 242]

Thanks for the reply. Mapped from jabba sport stage 2+
And dv has been checked

 

[jonathon 242]

I have a 3rd gear pull data log if that’s any good.?I’m not sure what The reading should be

 

[S.]

With these engines can be anything really. Recently i found out that missing dip stick seal caused power loss. Did you check pcv and hose?
(I'm also hunting for a cold start issue on mine once up to temperature runs like a beast and the car had major work done few months ago).

 

[paddy]

If you know it's dropped to 300 didn't the guy that dyno'd it offer any clue ?

 

[jonathon 242]

With these engines can be anything really. Recently i found out that missing dip stick seal caused power loss. Did you check pcv and hose?
(I'm also hunting for a cold start issue on mine once up to temperature runs like a beast and the car had major work done few months ago).

Yeah had a new dipstick and pcv valve a few months ago and the cars been smoke tested all looks fine.ive been over everything twice I thought it would bring up the eml light or something but no it drives spot on.not sure what to do now

 

[jonathon 242]

If you know it's dropped to 300 didn't the guy that dyno'd it offer any clue ?

Haven’t had It on the dyno yet a guy I spoke to said to divide the mass air flow g/s reading by 0.8 and that would give you the bhp.at maximum rate it was 240.30 g/s which works out to 300bhp

 

[paddy]

I think my first move might be to get it on the rollers, failing that i would see if jabba will re install the map so you know you are starting from a good base.

 

[jonathon 242]

I think my first move might be to get it on the rollers, failing that i would see if jabba will re install the map so you know you are starting from a good base.

Yeah think I’ll get it booked in an see what that brings up and take it from there

 

[voorhees]

Haven’t had It on the dyno yet a guy I spoke to said to divide the mass air flow g/s reading by 0.8 and that would give you the bhp.at maximum rate it was 240.30 g/s which works out to 300bhp

I take it you have upgraded your intake so that formula wouldn't work as the diameter where the sensor is has changed size so airflow isn't measured accurately.

 

[jonathon 242]

I take it you have upgraded your intake so that formula wouldn't work as the diameter where the sensor is has changed size so airflow isn't measured accurately.

Yes,I have a ramair oversized intake.