A better way?
Posted: Thu Oct 12, 2006 7:35 pm
I have decided to get a Haltech E11v2 for my 1985 GTV6. Everything is stock in the engine and after consulting Dave from Engine Management Systems the E11v2 seemed like the "coolest" thing to do. A bit pricey but something that would put a 1985 Alfa on a technological level with some of the newest cars on around. Today right before I began surgery I took the car over for a little dyno session. I figure we can all benefit from the results.
With about 60F temps stock motor with slightly adjusted airflow sensor:
Run 1: Max Torque and then HP
106.8 HP, 124.6 ft-lb @4499 RPM
114.6 HP, 121.4 ft-lb @4959 RPM
Run 2:
122.1 HP, 130.0 ft-lb @4930
127.1 HP, 123.4 ft-lb @5406
Run 3:
120.8 HP, 128.3 ft-lb @4954
123.2 HP, 126.3 ft-lb @5126
Run 4:
118.3 HP, 129.9 ft-lb @4781
123.3 HP, 125.9 ft-lb @5141
Keep in mind that the RPM sensor was not working well and the RPM was calculated from wheel speed via gear ratio at a "set" rpm on the tach which may or may not have been exactly the calibrated 2000 RPM.
So that is what a stock GTV6 gets. Tonight I took out the old fuel injection harness. With the new system the mass air sensor goes and is replaced by a MAP sensor for manifold pressure. The aux air valve, altitude sensor, cold start injector, and a few other things also go. It should simplify the engine compartment quite a bit and open up some much needed space. I am under the watchful eye of Dave from Engine Management Systems who specializes in EFI in particular wiring harnesses. He has built wiring harnesses for some pretty serious race car and is VERY particular on how things are done. He has all splices in one place and pays particular attention to proper crimping and other such stuff. I thought I was anal but this man gives a whole new meaning to the word. I will write more as I learn more.
With about 60F temps stock motor with slightly adjusted airflow sensor:
Run 1: Max Torque and then HP
106.8 HP, 124.6 ft-lb @4499 RPM
114.6 HP, 121.4 ft-lb @4959 RPM
Run 2:
122.1 HP, 130.0 ft-lb @4930
127.1 HP, 123.4 ft-lb @5406
Run 3:
120.8 HP, 128.3 ft-lb @4954
123.2 HP, 126.3 ft-lb @5126
Run 4:
118.3 HP, 129.9 ft-lb @4781
123.3 HP, 125.9 ft-lb @5141
Keep in mind that the RPM sensor was not working well and the RPM was calculated from wheel speed via gear ratio at a "set" rpm on the tach which may or may not have been exactly the calibrated 2000 RPM.
So that is what a stock GTV6 gets. Tonight I took out the old fuel injection harness. With the new system the mass air sensor goes and is replaced by a MAP sensor for manifold pressure. The aux air valve, altitude sensor, cold start injector, and a few other things also go. It should simplify the engine compartment quite a bit and open up some much needed space. I am under the watchful eye of Dave from Engine Management Systems who specializes in EFI in particular wiring harnesses. He has built wiring harnesses for some pretty serious race car and is VERY particular on how things are done. He has all splices in one place and pays particular attention to proper crimping and other such stuff. I thought I was anal but this man gives a whole new meaning to the word. I will write more as I learn more.