Lean full throttle

[fleet man]

watch my car run when i shut off engine at 2:10 no need to go more. also i have idle timing is 12 i found at any higher it would kick back when cranking to start.and my vacuum went to 15 to almost 16 i will post a video of the next time i go for a drive.

https://youtu.be/G44HjJsgRV4

[Mopar493]

my fuel psi at idle is 49 to 48 on a 58 psi system maybe a little hi at idle ?

Maybe but i have the pressure right on 58psi there with the vacuum reference unhooked, set after the pressure gauge on the regulator and from what i have read with the vacuum connected it should drop about 5 psi.

[Mopar493]

Does it use a doughnut?
Or some type of gasket between the exhaust manifold, and exhaust pipe?

No doughnuts, i use Remflex manifold to heads and on the flangs between manifold and exhaust pipe. I checked the system with a smoke machine before i installed Pro flo 4 but could not find any leaks. If there was any leak should it not show lean at all rpm, not only when i hit the throttle? Normal driving its right on target and almost not add or take away any fuel.

[fleet man]

Ok, is that even more fuel than 5036 i started with? On 5036 it run so rich at idle so i had to change my oil. The picture is from map 5036, short ft take away 30 and it still running on rich 12,2 AFR. I changed to 5029 and its running really good with short ft only at 1 or 2 +/- normal driving but when i stamp on the gas it reads to lean, same with 5033. 5036 maybe is good at wot but way to rich at idle. If 5037 is even more rich i not think im even able to get the car running. Maybe i should try again with 5036 and go in to fuel modifier and take away max 30 at idle before i even start so it learn that when i drive and see how it drives on that map otherwise, what do you think?

my fuel psi at idle is 49 to 48 on a 58 psi system maybe a little hi at idle ?

[BITE_ME]

Does it use a doughnut?
Or some type of gasket between the exhaust manifold, and exhaust pipe?

[Mopar493]

What kind of exhaust system are you using?
Describe it from the head, to 3 feet past the O2 sensor.

I have Mopar HP manifold on the heads, 2,5" pipes from them that goes over to 3" about 4 feet after the manifold. The o2 sensor are placed abot 11 a clock 15" after the manifold. Its a full lenght system. Remflex gaskets head/manifold and manifold/ exhaust flange. Are you suspecting leaks?
I checked with a smoke machine before i installed the Pro flo 4 system and could not find any.

[fleet man]

i run a set of tti 2 1/4 pry tube to a 3 in to a 2 1/5 reducer then into turbo mufflers and over the axle to rear bumper.

[BITE_ME]

What kind of exhaust system are you using?
Describe it from the head, to 3 feet past the O2 sensor.

[fleet man]

not sure about that i used vacuum to chose a map and close to my cid second as i have watched from bite-me and 2700 case

my vacuum is 14 to 15 as it is learning i see 16 sometimes

[Mopar493]

i started with 5034 and was way to rich went to a different map don't remember witch one i also had to change oil and spark plugs then the o=2 went out when i went to 5037 all numbers came in to range and set i set the arf to 13.9 and it stays there small up and down while driving i only took fuel out of cold temps as it warmed up and idle timing is 12 fires right up and run's great.

Ok so the maps dont get richer with the numbers? Maybe i should try 5037 and see how it runs. I thought fuel tables get richer with the numbers.

[fleet man]

i started with 5034 and was way to rich went to a different map don't remember witch one i also had to change oil and spark plugs then the o=2 went out when i went to 5037 all numbers came in to range and set i set the arf to 13.9 and it stays there small up and down while driving i only took fuel out of cold temps as it warmed up and idle timing is 12 fires right up and run's great.

[Mopar493]

on my mopar 451 i use map 5037 and it run's real good and never a poping in exhaust

Ok, is that even more fuel than 5036 i started with? On 5036 it run so rich at idle so i had to change my oil. The picture is from map 5036, short ft take away 30 and it still running on rich 12,2 AFR. I changed to 5029 and its running really good with short ft only at 1 or 2 +/- normal driving but when i stamp on the gas it reads to lean, same with 5033. 5036 maybe is good at wot but way to rich at idle. If 5037 is even more rich i not think im even able to get the car running. Maybe i should try again with 5036 and go in to fuel modifier and take away max 30 at idle before i even start so it learn that when i drive and see how it drives on that map otherwise, what do you think?

[fleet man]

on my mopar 451 i use map 5037 and it run's real good and never a poping in exhaust

[Mopar493]

No one have any ideas why it séems to lean out or anyway show lean when you give it some gas? Give it 30% more accel fuel doesnt seems to help map 5029 either, shows lean anyway. I drive map 5033 right now but it shows to lean on that one to, AFR target is right on otherwise. My engine show 14-15 hg/inch of vacuum hot idle and around 20 hg/inch at cruise. Base map 5036 that suppose to fit my engine is so rich at idle i have to take away 30 at idle in fuel modifier and than it looks like this, short ft still take away 25 so that map must be amazing to rich for my engine(see pic). Its running really great on map 5029 or 5033, no drivabilty issues at all, just pop on decel sometimes, it just shows to lean when i give it throttle but no hesitate or stumble, i like to see under 13 when i hit on it, not 14-15. Maybe i have drive it to little yet but its scary to hit on it to much with AFR values like that and not seems to be better though the short ft add 30.

[Mopar493]

Did you try the fuel modifiers for WOT? Try adding fuel there and see what happens.

I tried to add 30 there same i see on the short ft but i did not know if i need to acctually be on wot when i print that in? Anyway i printed in 30 but no difference, that was on base map 5029, have not try it on base map 5033 yet. I cycled the key after all changes. The strange thing is i not notice any real drivebilty problems, the engine answer good on throttle, no stumbles or hesitation at all, i just see the AFR shows to lean for that throttle opening. Its just a bit scary, i not want to destroy the engine with to little fuel but i dont know the normal behavior on the gauge, i want to see under 13 when i hit it. The AFR stays at target AFR during normal driving.