Injector scaling and latecy for different injectors.
Alright guys. I have a weird situation and I've read through this whole thread and haven't found a solution. April 2012, Stock 06 evo was tuned on PTE 1200 on pump. Scaling was 815 at that time. Car ran great and fuel trims were around -2-3% although the scaling seemed low. May 2013, car now has a built 2.0 LR, ported head, ported intake and a several other supporting mods.
So I tune the car with the same injector settings. After the tune is done on pump Im at 860 and trims are -1%. Perfect but still think scaling is way low. Move on to e85 with switched mapping on the stock ecu. Started at 600 thinking It would be a close start. Nope.
Im now at 457 and still seeing +15% cruising. Might end up under 400 to get to 0%. No boost leaks, no vacuum leaks. Way off of what others are seeing for Precision 1200 injectors. Thoughts from the experts?
So I tune the car with the same injector settings. After the tune is done on pump Im at 860 and trims are -1%. Perfect but still think scaling is way low. Move on to e85 with switched mapping on the stock ecu. Started at 600 thinking It would be a close start. Nope.
Im now at 457 and still seeing +15% cruising. Might end up under 400 to get to 0%. No boost leaks, no vacuum leaks. Way off of what others are seeing for Precision 1200 injectors. Thoughts from the experts?
Former Sponsor
Joined: Mar 2013
Posts: 452
Likes: 1
From: Colorado
Alright guys. I have a weird situation and I've read through this whole thread and haven't found a solution. April 2012, Stock 06 evo was tuned on PTE 1200 on pump. Scaling was 815 at that time. Car ran great and fuel trims were around -2-3% although the scaling seemed low. May 2013, car now has a built 2.0 LR, ported head, ported intake and a several other supporting mods.
So I tune the car with the same injector settings. After the tune is done on pump Im at 860 and trims are -1%. Perfect but still think scaling is way low. Move on to e85 with switched mapping on the stock ecu. Started at 600 thinking It would be a close start. Nope.
Im now at 457 and still seeing +15% cruising. Might end up under 400 to get to 0%. No boost leaks, no vacuum leaks. Way off of what others are seeing for Precision 1200 injectors. Thoughts from the experts?
So I tune the car with the same injector settings. After the tune is done on pump Im at 860 and trims are -1%. Perfect but still think scaling is way low. Move on to e85 with switched mapping on the stock ecu. Started at 600 thinking It would be a close start. Nope.
Im now at 457 and still seeing +15% cruising. Might end up under 400 to get to 0%. No boost leaks, no vacuum leaks. Way off of what others are seeing for Precision 1200 injectors. Thoughts from the experts?
My mid LTFT is this. I got down as low as 400 even and still was around +15%. Ive tuned other evos with the same base starting map and had better results with the scalings so I don't believe it to be a setting I have set wrong.
These are from driving the car at 55-70 mph steady for 30-45 min at a time. Open loop load set at 80, fuel map at 14.7 in all cells surrounding the cruising areas so numbers won't scew. Ive tuned a dozen evos with no issues except this one. I can't touch the car again until saturday so Im going to throw in stock injectors and see what my readings end up being on pump gas.
These are from driving the car at 55-70 mph steady for 30-45 min at a time. Open loop load set at 80, fuel map at 14.7 in all cells surrounding the cruising areas so numbers won't scew. Ive tuned a dozen evos with no issues except this one. I can't touch the car again until saturday so Im going to throw in stock injectors and see what my readings end up being on pump gas.
Couple of options for you:
1. Send em to FIC for a clean and flow test. My 1050s behaved the same until they were cleaned out with the ultrasonic rig they use.
2. They may not really be PTE 1200's - anyone can stick a label on wrong.
1. Send em to FIC for a clean and flow test. My 1050s behaved the same until they were cleaned out with the ultrasonic rig they use.
2. They may not really be PTE 1200's - anyone can stick a label on wrong.
Newbie
Joined: May 2011
Posts: 37
Likes: 0
From: orlando,FL
Posting my AFR- proven values for 780CC PTE INJECTORS.
I U made your scalings (AND PROVED THEM ON WIDEBAND AFR) for different ones -post them here.
Injectors Delfi? Prescision labeled injectors-780 cc.
Injector scailing :609!
Battery voltage Latency:
3.312
1.68
1.032
0.672
0.432
0.264
0.144
(stock)
No other tables touched .Stock-like idle.
I U made your scalings (AND PROVED THEM ON WIDEBAND AFR) for different ones -post them here.
Injectors Delfi? Prescision labeled injectors-780 cc.
Injector scailing :609!
Battery voltage Latency:
3.312
1.68
1.032
0.672
0.432
0.264
0.144
(stock)
No other tables touched .Stock-like idle.
does anyone have this for 1000cc injectors would be awesome cant find it anywhere on the forum thanks
PTE 1000cc
Scaling 725
Latency
3.312
2.186
1.281
0.771
0.458
0.283
0.172
Newbie
Joined: May 2011
Posts: 37
Likes: 0
From: orlando,FL
Found in this thread https://www.evolutionm.net/forums/ec...upermerge.html under the important ecu thread links sticky. There are a few more for PTE 1000cc's.
PTE 1000cc
Scaling 725
Latency
3.312
2.186
1.281
0.771
0.458
0.283
0.172
PTE 1000cc
Scaling 725
Latency
3.312
2.186
1.281
0.771
0.458
0.283
0.172
Sorry don't have the ASNU injectors, but for anyone else running the FIC 1050cc High Z injectors, these values are working great for me. LTFT Short is -0.5 and LTFT Mid is -0.1.
Injector Scaling = 943
Injector Latency Comp:
V........ ms
4.69 ... 5.640
7.03 ... 3.552
9.38 ... 2.136
11.72 ... 1.344
14.06 ... 1.008
16.41 ... 0.816
18.68 ... 0.696
Injector Scaling = 943
Injector Latency Comp:
V........ ms
4.69 ... 5.640
7.03 ... 3.552
9.38 ... 2.136
11.72 ... 1.344
14.06 ... 1.008
16.41 ... 0.816
18.68 ... 0.696