That log was with my old map. Haven't had time to upload the new map. Im also using 93 octane.

I will change the scaling from 609 to 622 on your file before uploading.

Thanks again and will update soon.

 

You need to lower your injector scaling because the car is running so lean. I would start with it around 573 or 585.

Larger scaling = leaner
Smaller scaling = richer

 

Man, You are running REALLY lean after 4900RPM. You should aim to ~11,5 AFR @4,5K, and may want to taper it to 11 at redline.


Check the vacuum line to your Fuel Pressure Regulator. Is it fine, isn't it torn, is it there? If it is on it's place, didn't came of and isn't torn, squized or nipped, then are you sure that you DO have "Buschur Evolution 680cc Injectors"? Could you take a picture of your injectors?

 

Did you see the ROM i posted?

I will check the regulator. The injectors sure look like bushur's cant tell if they are 680's or not though.

 

yes I did.

 

Check my advice, you need to lower the injector scaling. Otherwise the car will continue to run extremely lean.

 

Thanks and i was planning on following your advice. I just forgot to respond to it.

 

With my the way my stock map looks should i be running that lean?

 

No! With fuel map like you have, you should run pig rich!

Try to lower your injector scaling as evo8426 adviced you. If you are so lean with 609 scaling I would actually try setting scaling to 560 and fuel map to 10 instead of 9s and see how it goes. Also make sure your fuel pump is in good condition and not going out of breath.

You should monitor your Wideband during the run. If you are running leaner than 12 at full boost, you should stop the run and adjust you fuelmap or scaling.

Here are three maps just for reference, do not copy them blindly. All three cars have different intake systems, turbos, cams etc.. But all three have 10+ AFR in the map (lean spool off), and 11+AFR on the wideband.

First is stock injectors (513 scaling): running 250 load at 3500 at 11,5 AFR, tapering to 230 at 7000 at 11 AFR
Second is PTE780 injectors(731 scaling): peaking at 270 load 3500 11,5 AFR, 250ish load at 4200 at 11.6 AFR, tapering to 240 load at 7000 at 11.4 AFR
Third is ID1000 injectors (812 scaling): peaking at 280 load 3250 at 11.2 AFR, holding 250-260 load till 5600 at 11.6 AFR and tapering to 240ish load at redline at 11.4 AFR.


Hope that helps.

 

Thanks.

It sure does help.

I haven't had much time to play with the car lately. Hopefully this weekend I will.

Wanted to figure out first why my tactrix doesnt want to cooperate with ecuflash. So far i have been able to read my ROm with evoscan but not ecuflash.

I will also do a more thorough check of the fpr as the vacuum line seemed to have a little lubrication on top of it. Cleaned it and want to see if it comes back.

 

That is probably oil comming from a small drain pipe pressed in to the valve cover. This small pipe is going through the valve cover and made for draining water away from coils. It tends to become a little loose and untight over time, making oil from the valve come out and grease the FPR and things around it.

 

Thanks for the input. Drove it for a while this weekend and didnt see much on the vacuum line.

So no leak there.

 

Had some time to play with the car this weekend. I used the Rom that you guys posted.

Followed your suggestions and ended up going with a 573 injector scaling and adjusting the fuel trims a lot.

Still need to do some fine tuning to get a better AFR but im closer to 11.5 now.

I have a couple of issues that need help on. Im still getting knock at 5k. Happens everytime at 5k. Also having some small knock at low load and low rpms. For the low load is it better to adjust on fuel or timing?

With regards to the injectors and pump something is odd. At the power level the IDC shouldn't be a 96% Especially with a walbro and 680 injectors. Im thinking that the pump is going and i know its not a HP. Thinking of replacing it.

Thanks again for the help guys.

 

Here is the log

 

You are running lean starting just before 5k and the AFR goes up with rpm. Something is not right. Fuel pump may be going south or the tune is just way off.

Try richening all the cells at 210-230 load 1.0 AFR point and see if it the AFR reads any richer. If not then you have a fueling issue. Time for a new pump sock etc...

If the AFr dips and stays in the ten's ( 10.0 to 11.0 ) after the tweak then the tune is just way off.

One last thing, check the downpipe and exhaust to see if they are contacting anything metal around them, this will cause false knock