Injector timing changes after cam swap / EOIT
I do not know the why of it but I know it is true. It is one of the first things to check in the - I have big injectors car will not idle for **** but idled fine on old injectors please help me - posts. 100% correlation.
But if the OP problem is fixed that is all that matters.
But if the OP problem is fixed that is all that matters.
Thread Starter
Staging Lane
Joined: Jun 2019
Posts: 73
Likes: 0
So I got some seat time.
idle trims and my rich low map decel are definitely better.
I am still getting the lean tip in when I stomp on it at higher rpms. Still, my NB02's are show it going rich soon as I enter PE though which I made really early. (55kpa and only 30% throttle) so I'm not sure if it's a wide band delay or what. The lean spike goes to 14.0ish but only for .5 of a second and then my AFR is stable again and on target through the rest of the VE map.
I am still getting knock though. So I lowered timing again, im down to 19 degrees by the time I hit 100kpa now and it drops more form there down from there. The car still responds well and makes plenty of power even with the lower timing.
Tested it with the lower timing, Still getting knock.
So I changed the EOIT from 5.53 to 5.95 and nothing else in the tune. This showed a slight improvement in knock. Next I moved EOIT even further to 6.30 suprisingly, knock is now pretty much gone with the exception of a 3 degree spike from it being way to fat at part throttle.
basically If I could dial the VE back a bit in the 2,800+ range between 70 and 100kpa it would fix my super fat part throttle / steady roll in driving.
That being said though, I still need the engine to get that extra fuel that I've now got built into the VE table to account for fast tip in wot situations.
either of you have any luck tweaking the trainsient wall wetting table? Or have advice on other trainsient adjustments that might help with rapid throttle transitions so I can dial the VE back a bit for part throttle but not go lean with fast wot entry?
I'll add this,
Before vac/boost referencing the regulator I didn't have all these fuel consistency issues. I also had stock EOIT values then too though so changing those and it fixing the knock dosent make sense.
In other words, that Boost reference line is really close to coming off the car.
.
idle trims and my rich low map decel are definitely better.
I am still getting the lean tip in when I stomp on it at higher rpms. Still, my NB02's are show it going rich soon as I enter PE though which I made really early. (55kpa and only 30% throttle) so I'm not sure if it's a wide band delay or what. The lean spike goes to 14.0ish but only for .5 of a second and then my AFR is stable again and on target through the rest of the VE map.
I am still getting knock though. So I lowered timing again, im down to 19 degrees by the time I hit 100kpa now and it drops more form there down from there. The car still responds well and makes plenty of power even with the lower timing.
Tested it with the lower timing, Still getting knock.
So I changed the EOIT from 5.53 to 5.95 and nothing else in the tune. This showed a slight improvement in knock. Next I moved EOIT even further to 6.30 suprisingly, knock is now pretty much gone with the exception of a 3 degree spike from it being way to fat at part throttle.
basically If I could dial the VE back a bit in the 2,800+ range between 70 and 100kpa it would fix my super fat part throttle / steady roll in driving.
That being said though, I still need the engine to get that extra fuel that I've now got built into the VE table to account for fast tip in wot situations.
either of you have any luck tweaking the trainsient wall wetting table? Or have advice on other trainsient adjustments that might help with rapid throttle transitions so I can dial the VE back a bit for part throttle but not go lean with fast wot entry?
I'll add this,
Before vac/boost referencing the regulator I didn't have all these fuel consistency issues. I also had stock EOIT values then too though so changing those and it fixing the knock dosent make sense.
In other words, that Boost reference line is really close to coming off the car.
.
Running a boost referenced fpr should make tuning easier not harder. In EFI Live there is a stomp compensation factor table that is specifically for throttle tip in to compensate for large changes in airflow, that's what you need to be touching to get rid of your lean tip in knock. Maybe Darth knows what it's called in HPT, but I wouldn't pull the vacuum line.
Thread Starter
Staging Lane
Joined: Jun 2019
Posts: 73
Likes: 0
That would be a great table to have.
Besides that tip in issue I love the regulator, its allowed me to run 60lb injectors past 6,500 rpm with 15lbs of boost and still have my the duty cycle be in the high 70% range.
Besides that tip in issue I love the regulator, its allowed me to run 60lb injectors past 6,500 rpm with 15lbs of boost and still have my the duty cycle be in the high 70% range.
