MAF Sensor Gasket

[Daryl333]

Idle misfires are not normal. If you have a DTC for a misfire there is a issue.

Did you check to see if you cracked any more spark plugs like the last one which we called from the start?

Did you confirm a misfire or just think it sounds like you are hearing one?

So far 2 well known reputable coyote tuners appear to have the same issue so you deff have something going on with the car.

If you were semi local i would deff come out in person and find that issue for you.

We said nothing about not being able to tune the TB angle??? We tune the 132 all the time so not sure why you are sharing miss information??

Also the fuel system fixed the lean condition not the misfire.

Replacing that spark plug that had the cracked insulator fixed your wot misfire

You keep repeating that it's my car 'NOT THE TUNE'.
Yes I know that, again I'm not putting this on the tune, stop saying that shit. I already said the fuel system solved the WOT misfire.There were different plugs in when it went lean at WOT.
You said the the Whipple caused the idle fluctuations seems others don't think so.
Of course I know there's something going on with my car. You think I'm spending all this time and money on nothing??
Do you think that I and others don't know what a stumble/misfire at idle is??
This your email saying the large Throttle body is causing it.

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[Daryl333]

@Daryl333 Haha see. I don't want to pollute your post with the "drama". If you want more details about the situation you can look at my account posts (me and Wengerd have talked publicly about it several times) or DM me or if you want Wengerd's side DM him. I'm not going to respond anymore about my situation with Wengerd here because it just takes over the thread.

Also Wengerd I said I wasn't going to get into it, why can't you do the same, makes you look desperate every time you try and bash me. I've tried to be very courteous to you, I like your posts when you post good info, I don't bash you, I don't take over threads about you with my experience, and I've never even placed direct blame on you.

Not my business. And I don't know why he put that on my post.
But sure sounds like you two have a past alright.
But yes very easy to hear thru the exhaust. Like I said wump wump wump.

 

[tdstuart]

I already said the fuel system solved the WOT misfire.
You said the the Whipple caused the misfire seems others don't think so.
Of course I know there's something going on with my car. You think I'm spending all this time and money on nothing??
Do you think that I and others don't know what a stumble/ at idle is??
This your email saying the large Throttle body is causing it.

A jumping idle isn't necessarily a misfire.

Wengerd could have been referencing the bouncing idle you were talking about?

It is known that large throttle bodies on coyotes are hard to tune for and can have drivability issues and other minor issues (like idle fluctuations). This is common for those running the big monoblade throttle body on cobra jet setups.

The car can be just having a hard time controlling the throttle blade and can overshoot/undershoot the target rpm, hence the bouncing rpm.

 

[tdstuart]

Not my business.
But sure sounds like you two have a past alright.
But yes very easy to hear thru the exhaust. Like I said wump wump wump.

Haha yes.

Can you hear a difference between your two exhaust pipe exits? Even with my exhaust having an h-pipe, I could still hear that one bank sounded different than the other (When I had a cylinder with no compression causing a really bad misfire).

 

[Daryl333]

A jumping idle isn't necessarily a misfire.

Wengerd could have been referencing the bouncing idle you were talking about?

It is known that large throttle bodies on coyotes are hard to tune for and can have drivability issues and other minor issues (like idle fluctuations). This is common for those running the big monoblade throttle body on cobra jet setups.

The car can be just having a hard time controlling the throttle blade and can overshoot/undershoot the target rpm, hence the bouncing rpm.

With Lunds tune my tach isn't fluctuating anymore.
Just can hear and feel the stumble. I was at a car show on thursday night and someone asked what that noise was so I'm not hallucinating this shit. I'll have to check on what you said about different sounds from the exhaust.

 

[tdstuart]

With Lunds tune my tach isn't fluctuating anymore.
Just can hear and feel the stumble. I was at a car show on thursday night and someone asked what that noise was so I'm not hallucinating this shit. I'll have to check on what you said about different sounds from the exhaust.

Lund has pretty good connections in the industry. It's likely Whipple helped them with the tune for the throttle body control leading to no fluctuating tach with the Lund tune.

Ford helps Whipple with their tune (because Whipple can't sell their base kit that has weird idling issues), and Whipple helps Lund with their tune. Lund also has gotten Ford to help them with their tunes in general.

Wengerd would have better insight, but that's my guess.

 

[Torinate]

Hey Daryl.

We chat before several times about this. My idle misfire is a pop from the exhaust. I can literally watch the misfire in ForScan mode 6 live data. Hear the pop, watch the misfire count go up by 1.

I have tried everything as well. I also did 2 compression tests, hours of smoke testing and so many other things. Still there. I get a “backfire” on decel on occasion. It will do it once - only once a loud bang out the exhaust. Not gunshot loud but you know it happened!

I’m watching this thread in the hope there’s some information that will help me as well.

Good luck!

Hope the back feels better!!

 

[fmc_smt]

I have to ask , all you guys with miss fires , is code p0300 or p0316 setting ? If so have you ever thought of checking mode 6 information to see exactly what cylinder has a miss .

 

[Torinate]

For mine, I’ve never had CEL.
That’s what I use is the mode 6 data and watch the misfires live. Not enough to trigger a cel but they’re there. Can hear them and watch the misfire data live.

 

[Daryl333]

Hey Daryl.

We chat before several times about this. My idle misfire is a pop from the exhaust. I can literally watch the misfire in ForScan mode 6 live data. Hear the pop, watch the misfire count go up by 1.

I have tried everything as well. I also did 2 compression tests, hours of smoke testing and so many other things. Still there. I get a “backfire” on decel on occasion. It will do it once - only once a loud bang out the exhaust. Not gunshot loud but you know it happened!

I’m watching this thread in the hope there’s some information that will help me as well.

Good luck!

Hope the back feels better!!

Yea I hear ya.
On the new tune I don't have any more backfiring so we're getting there. But still hear and feel it at idle hot or cold op temps.
Lol

Hey Daryl.

We chat before several times about this. My idle misfire is a pop from the exhaust. I can literally watch the misfire in ForScan mode 6 live data. Hear the pop, watch the misfire count go up by 1.

I have tried everything as well. I also did 2 compression tests, hours of smoke testing and so many other things. Still there. I get a “backfire” on decel on occasion. It will do it once - only once a loud bang out the exhaust. Not gunshot loud but you know it happened!

I’m watching this thread in the hope there’s some information that will help me as well.

Good luck!

Hope the back feels better!!

Thx about the back it's not something i'd wish on anyone and is getting better, albeit slowly. Yes I remember our conversations, I'm always watching to see if you got yours solved.
Lol
I haven't heard any backfiring since the new tune and I only have the base right now. So definitely getting somewhere.
I'm optimistic that your compression tests weren't the cause, I've already put enough bucks in this thing and definitely not ready for a Shortblock. I'm putting in some new Kooks Green Cats on Tuesday and compression test on the following Monday. So we'll see how that turns out. Piece of mind and can take those off the list even tho I'm not getting any codes. Maybe I'll invest in Forscan.
And I guess you haven't made any headway huh?

 

[Daryl333]

I have to ask , all you guys with miss fires , is code p0300 or p0316 setting ? If so have you ever thought of checking mode 6 information to see exactly what cylinder has a miss .

I haven't got any codes , I wish I did. Torinate mentioned he's seeing the misfires in mode 6. I didn't know about using Forscan for misfires or whatever they are, but will definitely be looking at getting the items needed for it.

 

[tdstuart]

I haven't got any codes , I wish I did. Torinate mentioned he's seeing the misfires in mode 6. I didn't know about using Forscan for misfires or whatever they are, but will definitely be looking at getting the items needed for it.

Sounds like forscan is also able to read the misfire count. You could maybe give that a try as an alternative to the snap-on scanner I was mentioning.

 

[Daryl333]

Sounds like forscan is also able to read the misfire count. You could maybe give that a try as an alternative to the snap-on scanner I was mentioning.

I ordered the OBDLink MX+
for the Forscan hook up.
Hopefully can get an idea on where to look at. Not much left I can do at this point.
Pretty much done all I can except for the compression test.

 

[tdstuart]

I ordered the OBDLink MX+
for the Forscan hook up.
Hopefully can get an idea on where to look at. Not much left I can do at this point.
Pretty much done all I can except for the compression test.

Yep, compression test will help eliminate the big stuff.

Hopefully the motor isn't bad. Even if you do all the work yourself you are looking at ~$4.5k to get a new shortblock with new gaskets and bolts and other stuff.

 

[Torinate]

Not much headway. I’ve done everything as well but still get the idle pops.

That’s good Daryl. Here’s the thing though, if compression comes back fine, you’re in the spot I am lol. No further ahead except knowing the motor is fine and tune is fine. All the other stuff is fine lol.

Supposed to go to a track rental the 31st, but with the idle pop misfires, I’m going to pass. There’s another 3 or 4 booked for the summer and fall that I really want to make. I just don’t want to risk going knowing there’s an issue and make a bigger problem.

Did Lund give any idea what the issue could be? I take it you’re doing data logs now to get the tune sorted.

Hopefully that gets your issues solved.

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