Help - Hesitation at half throttle

[CrackedHorn]

I would post a log but apparently the file extension isn't accepted.

Installed a Paxton a few weeks ago and it was running great. Only in the last couple of days have I witnessed that the car seems to stumble a bit when at half throttle around 3k to 4k rpm. Feels similar to when an engine is lugged.
The car also doesn't feel like it has as much pep.

It will be Monday before I hear back from Lund but would like to know if there is anything I could check for on my own that wouldn't be tune related.



15 mustang
18 mani
E85 (always tested)
Paxton

Added Lambda:

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[Grimreaper]

Not enough to tell from what you posted. Need log of it happening to start.

Side note.. why such low timing on e85? Pump gas levels but can't see airload either.

 

[CrackedHorn]

Not enough to tell from what you posted. Need log of it happening to start.

Side note.. why such low timing on e85? Pump gas levels but can't see airload either.

I'm happy to post a log, but the forum didn’t like the file extension.

 

[CrackedHorn]

These logs are showing when the issue happens which is right where the RPM line goes jagged upon acceleration after every shift.

Without being able to actually post the log here, I am a bit handicapped. lol

 

[CrackedHorn]

Maybe this log will work.

 

[CrackedHorn]

Anyone out there able to help or point me in a proper direction? I have had 3 revisions on the tune and still have the exact same issue. Tuner is stating nothing seems off on their end and that they have never seen this potential issue before on a car with my mods....

The car acts like it is being lugged anytime I am accelerating and give it about half throttle. usually after shifting.

E85 tests good
I don't see any vacuum leaks at the block or in the hose
Piping looks secure
IMRC has been physically locked years ago

 

[RiotfunK]

Belt slipping?

 

[CrackedHorn]

Belt slipping?

I don't see any black dust in the area. I may need to get a boost gauge

 

[SBR70.3]

I had very similar issues. Yes, get a boost gauge. My BOV was stuck open and venting boost. I doubt that is your issue since your kit is new. I also had fried catalytic converters. Apparently the stock cats don't like superchargers. How many miles are on your car? I'd definitely consider checking them out.

Any codes?

New BOV, TSP long tube headers w/200 cell cats, Wengerd tune...running like it should.

 

[CrackedHorn]

I had very similar issues. Yes, get a boost gauge. My BOV was stuck open and venting boost. I doubt that is your issue since your kit is new. I also had fried catalytic converters. Apparently the stock cats don't like superchargers. How many miles are on your car? I'd definitely consider checking them out.

Any codes?

New BOV, TSP long tube headers w/200 cell cats, Wengerd tune...running like it should.

I have no codes but my car has quite a few miles. Only about 100 miles on boost, though.

I have a cat delete laying around and need to install it.

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