just got our iaw linked upto my s2 turbo with cosworth level 8 management and took a recording of the data does these readings look ok
Engne speed - 997
Inlet pressure - 408.30
Throttle poss - 0.99
Co trim - 34.77
Coolant temp - 99.50
Inlet air temp - 35.00
Batt voltage - 13.62
Inj pulse - 2.12
Ignition adv - 26.75
Boost cont val - 100%

 

CO Trim is high - will globally richen the fuelling throughout the rev range. I'm not sure what your fuelling values are under load but if it can be turned down to nearer 0 with a +/-10 tolerance thats the 'correct' place for it for mapping etc.

Also, the ignition advance seems quite high for idle, is the engine low compression?

Being slightly picky - I used to set the TPS to -0.30 on IAW and idle speed to between 900-950rpm.

Obviously every car is slightly different and you need to use what is correct for your application, but the info mentioned above was just what I used as a rule of thumb!

 

Thanks for the reply mate no the engine is standard compression.
I am going to get the car set up properly in the near future.
i will try to make some other ajustments to try to get it running a bit better i noticed that when i press the thottle fully open that it only reads 83. is that ok

 

Yes. Anything 80+ on IAW is significant of Wide Open Throttle conditions being seen by the ECU!

I'd expect the ignition advance at tickover to be quite a bit lower though. Might be worth sticking a timing light on and checking the actual advance against the timing marks in relation to the IAW monitor. It might be that you've got an 'offset' figure between what you're actually running and what the IAW thinks you're running.

 

Ok mate i will put the afr guage on tomorrow and see what it reads what should it be at idle? and try to get the Co down abit then will try to sort out the timing. Will try to let yous know the results tomorrow.

 

i made a mistake yesterday when i said the Co trim was 34.77 it was actually -34.77 so we adjusted the trim to 0.00 will this be better and we put the afr guage on and it was reading around 11.9 - 12.0 on tick over with the car at normal temp 96
is there any changes anyone would make to this?

 

Normally you can run around 14.5:1 AFR at idle and still keep it strong and smooth, if it's still a CVH head, you might even get away with leaner.

11.9-12.0:1 AFR is heading towards full throttle fuelling!

 

Thanks so do you think we should adjust the Co again to lean it towards the 14.5 then check what the afr is when cruising.
The car will be insured tomorrow so we can take it for a drive cant wait.

 

Personally yeah, i'd try leaning it off a little. Just make sure that you're in a position to monitor the fuelling accurately and listen for detonation if you stretch its legs!

 

yeah i will do. I can get some det cans but how could i keep an eye on the fueling?
i set the fuel to 3.5 bar at idle but how could i keep an eye on it whilst driving?

 

I mean use a wideband fuel monitor to check the AFRs - wasn't sure if you had an in car one or just using a CO machine to check the fuelling with the vehicle stationary.

 

or right get you now. Yeah i have a hand held innovate lm2 afr gauge thats what i got the readings off today will this be upto the job.
sorry for all the questions its just i am only just learning about this kind of thing but finding it really intresting.

 

You should be ok, i've got an LM2 myself just for quickly checking things.

Just don't try leaning the mixtures off to the limit without lab grade monitors and make sure you're listening for det before doing full throttle in high gears!

 

ok mate thanks will let you know how i get on tonight.

 

ok mate got the afr at around 14. on idle and it goes between 14.- 15. on cruise but when i boot it it goes upto 17. instead of going down to around 11-12 any ideas why this would happen?