I have an 87 TII, 60-1 turbo, 860cc primary injectors, 1680cc secondary injectors. Haltech Sprint RE.

I am in the process of breaking in my new motor. I have put 300+ miles on the car without any problems. I started my car the other to put more miles on it and found that when I would get on the throttle the A/R would spike to completely lean.

After some messing with it I have found that it happens right about 0.0 psi, so the transition from vacuum to boost. It's not an rpm related issue as I am able to give it a small amount of fuel and take it to high rpms.

I had a map loaded that a friend gave to me with a similar set up that worked great for me. I just recently uploaded a S5 base map to just see if the issue still occurred and it did. So could this be a hardware i.e. injectors problem or does it seem to be ecu related.

I have also change the transient throttle maps as well and it didn't seem to effect the issue either way.

 

This looking for help...any help is much appreciated.

 

post your map?

 

1 - Read the manual. It will tell you what needs to be adjusted.
2 - Ditch the S4 TPS. It's a big part of your issue. The S4 TPS is short range and will read 100% at around 30% throttle angle. There are a ton of posts on the options to swap this for a later S5 arrangement or modify what you have to make it full range.

 

I installed an S5 tps when I built the harness.

I will look into the manual more. Also I will try to post the map soon.

 

Has it done this since day 1?

 

No, it has not done this since day one. I drove it about 100 miles on a Monday and then parked it. I went out three days later and this is what was happening.

Here is the map

 

1 - Base fuel map is a bit of a wreck. This will complicate transient throttle response. The base fuel map needs to be correct before you even work on transient response.

2 - TPS filter level is set to 10. That's very high. The ECU might not even be seeing small stabs at the throttle.

3 - Asynchronous delay time is set to .08s. This isn't related to the issue you have but it can easily lead to over fueling during transient events. Default setting is .8s.

4 - Staging load in the fuel setup menu is set incorrectly. Again, not related to your issue but will cause issues with injector staging.

5 - Base ignition map is a wreck.

6 - Ignition split map is a wreck.

7 - And the winner is....wide open throttle map is enable under the advanced setup page and the entire map is set to 0. So when you stab the pedal wide open, the injectors shut off. Disable the feature in the setup page. No reason to use it.

 

You just gave me a list of things to correct on my map and said that the Wide Open Throttle map was enable was my problem. However I had the same problem as described above with this map, which did not have the Wide Open Throttle map enable. I was wondering if you had time if you could take a look at this one.