High AFR

[cupra_R_p7ppc]

I run my car at a rolling road and the results were dissapointing. The chart highlighted that the AFR was hitting 14's and therefore the car was running lean. When I got my car remapped originally earlier on in the year- it was running at 270bhp and the latest result was showing it at only 252bhp CAN ANYONE HELP- IS THIS NORMAL?????

 

[m0rk]

how did they measure the AFR?

pipe up the exhaust?

 

[cupra_R_p7ppc]

yeah thay put a pipe up the exhaust.

 

[m0rk]

ignore it then... if they weren't total novices they'd log it from the wide band lambda probe in the exhaust

I assume the car doesn't have any warning lights on? The ECU will throw an error code if it is running lean

 

[cupra_R_p7ppc]

Theres no lights on but when i got it mapped the power woz one thing and its now saying its that much less?

 

[m0rk]

you're assuming that today's dyno is giving the same readings as when you got mapped?

 

[cupra_R_p7ppc]

No it less woz 265-270bhp now 252bhp?

 

[m0rk]

and I was trying to say that dyno's aren't always as accurate as they should be.

it's only about 8% different

 

[cupra_R_p7ppc]

so should i take my car 2 a diffrent rolling road and compare all 3? coz im never going to no what my car is runing if there all out.

 

[m0rk]

get the car checked out with vagcom if you're unsure.

where's the map from?

 

[cupra_R_p7ppc]

who or whats vagcom? I got my car done at jabba sport.

 

[m0rk]

http://www.ross-tech.com/ <= vag-com

some of jabba's results have been wildly optimistic, but 270bhp is about right

I think that the dyno you've been on today might not have been run so well. did they feed enough air to the intercoolers?

 

[cupra_R_p7ppc]

Thay did have a fan on the front but i think it woz on the rad more than anythink.

I dont really want 2 buy 1 of them kits would be better if some place had 1 i could go 2 as im not that good on computers lol.