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- Oct 27, 2006
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Today i took my car to RS tuning in leeds for a dyno run...
The car has the following mods...
Hybrid K04 turbo,
3 inch downpipe and decat
Forge boost hoses and 007p DV
FMIC
Miltek "cat back" system
4 bar fuel regulator
cotton green panel air filter
The engine has done around 12k since a full build inc New block Uprated rods/pistons...
The car has been mapped by JBS with a custom stage 3 Custom code map,
Todays results...
we had 3 runs...
Run 1 = 239.1bhp @ the flywheel
Run 2 = 200 bhp @ the flywheel
Run 3 = 200.4 bhp @ the flywheel
Not realy a good day !
When i spoke to Paul the owner and guy who did my dyno runs he said the fueling is way off... the AFR went 13.2 at one point ! this is dangerously lean .
The boost peaked at 1.4 bar @3500 rpm then slowly dropped to 1.3 @5500 rpm the strangely went back up to 1.4 again ?
He seems to think the fueling is badly mapped and the boost control isnt very well set either.
This is his opinion but i did see the runs myself and saw the figures.
So....
Where now?
Im fitting my own AFR gauge tommorow now as im a little worried how much damage will be done if the car IS that lean.
BUT if today is a true reading of what the car is doing ( i think it is as all the other people who went got readings within 4 bhp of what they have had at other dyno days) Where do i start? Is there something mechanical i need to look at? Can i log anything with vag com? Do i need a new map?
The Rolling road used today is a Dyno Dynamics and was used in 2wd incase this makes a diffrence...
The car has the following mods...
Hybrid K04 turbo,
3 inch downpipe and decat
Forge boost hoses and 007p DV
FMIC
Miltek "cat back" system
4 bar fuel regulator
cotton green panel air filter
The engine has done around 12k since a full build inc New block Uprated rods/pistons...
The car has been mapped by JBS with a custom stage 3 Custom code map,
Todays results...
we had 3 runs...
Run 1 = 239.1bhp @ the flywheel
Run 2 = 200 bhp @ the flywheel
Run 3 = 200.4 bhp @ the flywheel
Not realy a good day !
When i spoke to Paul the owner and guy who did my dyno runs he said the fueling is way off... the AFR went 13.2 at one point ! this is dangerously lean .
The boost peaked at 1.4 bar @3500 rpm then slowly dropped to 1.3 @5500 rpm the strangely went back up to 1.4 again ?
He seems to think the fueling is badly mapped and the boost control isnt very well set either.
This is his opinion but i did see the runs myself and saw the figures.
So....
Where now?
Im fitting my own AFR gauge tommorow now as im a little worried how much damage will be done if the car IS that lean.
BUT if today is a true reading of what the car is doing ( i think it is as all the other people who went got readings within 4 bhp of what they have had at other dyno days) Where do i start? Is there something mechanical i need to look at? Can i log anything with vag com? Do i need a new map?
The Rolling road used today is a Dyno Dynamics and was used in 2wd incase this makes a diffrence...