Exhaust burp from Lund FF tune/18 Manifold

[Joe 5.0]

Does anyone else's exhaust make a burp or popping sound at idle? Ever since I installed the 2018 GT manifold (IMRC's locked) and uploaded the FF tune, I've gotten these exhaust burps. So far, I've only run 93 octane, so I can't vouch for E85.

I have a friend who told me the exhaust burping is normal with the FF tune, but I wanted to check with you all.

If nobody knows what I'm talking about, I'll try and grab a video later tonight.

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[Nerass]

https://drive.google.com/file/d/1fRLj-HE3mPrsQNG2xPCgOVdNYlDNSK3Q/view?usp=sharing

like this? a misfire?

 

[Joe 5.0]

https://drive.google.com/file/d/1fRLj-HE3mPrsQNG2xPCgOVdNYlDNSK3Q/view?usp=sharing

like this? a misfire?

I hear ticking similar to that, as well as a pronounced exhaust gurgle/burp/pop at idle. Is that your car in the video?

 

[Nerass]

yes it is

 

[Joe 5.0]

yes it is

Is that ticking even an issue or misfire of some sort? Have you gotten it resolved?

 

[Nerass]

i think its a misfire . ive been chasing it for a while
i get p0300 sometimes

 

[Joe 5.0]

i think its a misfire . ive been chasing it for a while
i get p0300 sometimes

Odd. It definitely has to be tune related then, because this wasn't an issue pre-manifold/tune install.

I don't have any codes or CEL.

 

[Nerass]

see if you get a pending misfire... thats where mine usually is.

7327797992 shoot me a video if u got an iphone

 

[Joe 5.0]

see if you get a pending misfire... thats where mine usually is.

7327797992 shoot me a video if u got an iphone

Will do.

 

[jshammond]

Does anyone else's exhaust make a burp or popping sound at idle? Ever since I installed the 2018 GT manifold (IMRC's locked) and uploaded the FF tune, I've gotten these exhaust burps. So far, I've only run 93 octane, so I can't vouch for E85.

I have a friend who told me the exhaust burping is normal with the FF tune, but I wanted to check with you all.

If nobody knows what I'm talking about, I'll try and grab a video later tonight.

Sorry, I'm a little late to the party, but my car is doing the same thing at idle after the ported 18 install and Lund FF tune. I don't know if my car was doing it when I was running 93 (only had it in long enough to datalog and get the FF revision), but with e85 in the tank it does the popping/burping still. It's more often and more pronounced on a cold start, but not as bad when the car gets to operating temps. Just wanted to see if you were able to get the issue sorted out before I start chasing the problem. Thanks!

 

[keiths2kgt]

Sorry, I'm a little late to the party, but my car is doing the same thing at idle after the ported 18 install and Lund FF tune. I don't know if my car was doing it when I was running 93 (only had it in long enough to datalog and get the FF revision), but with e85 in the tank it does the popping/burping still. It's more often and more pronounced on a cold start, but not as bad when the car gets to operating temps. Just wanted to see if you were able to get the issue sorted out before I start chasing the problem. Thanks!

Hey man, who’d you get to port it and is it throwing any codes?

 

[jshammond]

Hey man, who’d you get to port it and is it throwing any codes?

Bret Barber at Air Flow Solutions. No I haven't had any codes and it's been a few weeks now.

 

[Racerx009]

I have the 18 manifold installed on my 17 mustang gt and it is popping in the intake manifold at idle

 

[jshammond]

I have the 18 manifold installed on my 17 mustang gt and it is popping in the intake manifold at idle

Is the sound also coming out of the exhaust tips? You hear it around the manifold or throttle body then a second later the sound comes out of the exhaust tips?

 

[Racerx009]

Is the sound also coming out of the exhaust tips? You hear it around the manifold or throttle body then a second later the sound comes out of the exhaust tips?

It only pops in the intake tube and it only happens when I load lunds racing tune. I have a tune done on a dyno and no popping.

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