1G 90 Talon TSi hard to start

[Breadvans]

Just installed new injectors and an AFPR and now the car is hard to start. They’re 750cc injectors and I adjusted DSMLink as such. If I hold the gas pedal I can get it to start but it runs super rich. I adjusted the AFPR too. Not really sure if I’m missing something or what?

 

[steve]

So what did you set your AFPR to and did you adjust it with the vacuum line off and plugged?

Are the 750cc injectors low or high impedence?

Since this is a much a tuning issue, please post a log of you trying to start it.

 

[Breadvans]

So what did you set your AFPR to and did you adjust it with the vacuum line off and plugged?

Are the 750cc injectors low or high impedence?

Since this is a much a tuning issue, please post a log of you trying to start it.

I set it to 37 and plugged it with my thumb. They’re low impedance injectors I believe. And okay I’ll get a log

 

[pauleyman]

Are you 100% sure they are 750? Do you have a flow sheet? I've seen it before where the global is wrong because of this.

 

[Breadvans]

heres the log from today

Are you 100% sure they are 750? Do you have a flow sheet? I've seen it before where the global is wrong because of this.

They're flow tested at 720cc at 43.5 psi, I tried both ways in link and it doesn't help.

 

[1990TSIAWDTALON]

TPS volts are low. It should be .63-.64v. Log shows .53 so it needs adjusted. Key on signal is there, Global is correct if the car has 750's but not enough data to see anything else. You need to set your wideband up also, so we can see the AFR's (if you can get it to run). I noticed no deadtime on the injectors. I would throw some in and see if the car reacts any different. A picture of the injectors could be handy too.

 

[Breadvans]

TPS volts are low. It should be .63-.64v. Log shows .53 so it needs adjusted. Key on signal is there, Global is correct if the car has 750's but not enough data to see anything else. You need to set your wideband up also, so we can see the AFR's (if you can get it to run). I noticed no deadtime on the injectors. I would throw some in and see if the car reacts any different. A picture of the injectors could be handy too.

The car runs with 450s. I have my wideband set up I just can’t find it in the displayed values screen. I set it up through the ECU inputs and such but it’s just not giving me the option. I had a deadtime of I believe 300 usecs but it didn’t change it at all. I’ll try and adjust the TPS tho

 

[Breadvans]

Have you guys ever had a problem with the ECU not changing the injector settings you put in? Cuz my other eagle had a similar problem.

Fuel air compression and timing, but no start. I swapped over the ECU and changed pins 6 and 14 and it worked fine. Then I added the AFPR and changed the injectors and now same problem

 

[We're on Boost]

Have you guys ever had a problem with the ECU not changing the injector settings you put in? Cuz my other eagle had a similar problem.

Fuel air compression and timing, but no start. I swapped over the ECU and changed pins 6 and 14 and it worked fine. Then I added the AFPR and changed the injectors and now same problem

Well on my car, CrankingFuelAdj seems to not work at all. I mean I can change the numbers in the table for it radically and it does nothing to change InjOn time or InjDuty during cranking. And when I log CrankingFuelAdj it just gives me 0 for the value, all the time. All I could think of was to check my firmware version on the ECU and my application version on my laptop, and they are ok. So it's unresolved. Fortunately it's summer, and lean starts are not harmful to the engine like rich starts can be (washing down the cylinder walls with raw gas).

BTW if CrankingFuelAdj does work on your car, you could try radically reducing the numbers for 46 deg F and 70 deg F just to see if it makes your cold starts better. It wouldn't solve your problem but if it helped cold starts it would sort of verify that things really are too rich. If you try fooling around with CrankingFuelAdj be sure to add it to your "Captured Values" list so you can verify whether it is "working".

When I look at your log I do think that your numbers during cranking for InjOn and InjDuty are awfully high even for 750s. Then when you floor the gas pedal those 2 numbers go to 0 which I suppose is you trying to keep from flooding the engine.