Chasing a ghost

[zdl]

I cannot figure out what the issue is. I have tried everything. Checked and swapped the injectors. Put a new O2 in. Any ideas?

 

[2011 gtcs]

What exactly is going on? Misfire issue or something?

 

[zdl]

My tuner says I have an air leak, but it was a little rough on the dlow rev. I just put a ported trinity on

 

[2011 gtcs]

My tuner says I have an air leak, but it was a little rough on the dlow rev. I just put a ported trinity on

Gotcha, ok did you install new gaskets? What year GT500 do you have? Can you maybe give a quick run down of your mods and who's your tuner? It might be a good idea replacing the gasket between the supercharger and the intake manifold, VMP sells a nice one.

VMP Boost-Lok Supercharger Gasket Seal for 07-14 GT500 and 11-17 Coyote

VMP has designed the ultimate lower intake manifold-to-supercharger gasket seal for GT500s and Coyotes. The VMP Boost-Lok gasket prevents boost loss due to the fold-over issue common in high boost situations with the factory gasket. Direct replacement for the black Ford gasket...

www.vmpperformance.com

 

[zdl]

I have an 11 gt500 I did a trinity swap. I didn't replace the gasket. My car only has 20k mi on it. Bj is my tuner. He's pretty convinced that it's an air leak or connection issue. He said it was the blower gasket other numbers would be off it's just specifically short term fuel trim bank 1.

 

[Vinnie_B]

Did you scan the car for any DTC Faults? Perform OBD2 Drive cycle test and OBD2 mode 6 Test? Did you consider vacuum leak smoke test to rule out any possible air leaks?

 

[zdl]

Did you scan the car for any DTC Faults? Perform OBD2 Drive cycle test and OBD2 mode 6 Test? Did you consider vacuum leak smoke test to rule out any possible air leaks?

No I haven't done that. Can I do that with my sct? I do not have any lites on.

 

[Vinnie_B]

No I haven't done that. Can I do that with my sct? I do not have any lites on.

Ok no CEL or MIL. I would recommend ForScan @zdl

FORScan Home

forscan.org

 

[2011 gtcs]

I have an 11 gt500 I did a trinity swap. I didn't replace the gasket. My car only has 20k mi on it. Bj is my tuner. He's pretty convinced that it's an air leak or connection issue. He said it was the blower gasket other numbers would be off it's just specifically short term fuel trim bank 1.

Do you have a OFR X-pipe or H-pipe? You said you replaced a AF sensor, I'm assuming you replaced the one that's on the passenger side before the cat, and obviously the 11+ GT500 have wideband sensors so they're pretty damn expensive. Bank 1 is the passenger side if I remember correctly.

 

[zdl]

Yes I do have offroad H and they are not the cheapest.

 

[2011 gtcs]

Yes I do have offroad H and they are not the cheapest.

Ok, so bank 1 (passenger side) has the 02 sensor that actually goes into the OFR H-pipe. I'd double check and make sure the exhaust connection between the manifold and the OFR H-pipe is good and there's no leaks, you can add some copper rtv around the exhaust joint that goes to the manifold to make sure the connection is solid.

https://www.summitracing.com/parts/ptx-81878?seid=srese1&gclid=Cj0KCQjw4PKTBhD8ARIsAHChzRJ5Xq8mNDcq74txzaai1bbykFNFnU7VlYXSvZIqY7fIektN1PsKNVIaAhrnEALw_wcB

I know problems like these can be a nightmare. And BJ is very thorough with his tunes.

 

[SCGallo2]

I have seen two major brand name OR-X / H mid-pipes that had flange adapter inserts (reducers) for mating to OEM manifolds. Check to make sure it is not missing on the passenger side, if yours is supposed to have them.

Edit: added picture

 

[zdl]

I have seen two major brand name OR-X / H mid-pipes that had flange adapter inserts (reducers) for mating to OEM manifolds. Check to make sure it is not missing on the passenger side, if yours is supposed to have them.

Its bolted up solid and cannot hear anything in terms of a leak

 

[SCGallo2]

Is your EGR tube tight on both ends? You should have loosened it to install the TVS.

 

[2011 gtcs]

Its bolted up solid and cannot hear anything in terms of a leak

Definitely a odd one, does the car run ok? Or is it acting up? The last thing I would say to check is the EGR gasket and pipe that goes to the manifold from the EGR

 

[2011 gtcs]

Is your EGR tube tight on both ends? You should have loosened it to install the TVS.

View attachment 1748397

I was just thinking this

 

[zdl]

Is your EGR tube tight on both ends? You should have loosened it to install the TVS.

View attachment 1748397

I did not loosen it to install. I was able to get it wo doing that

 

[zdl]

I did find this however when I pulled the plugs 2,3 seem to be not firing properly.

 

[2011 gtcs]

I did find this however when I pulled the plugs 2,3 seem to be not firing properly.

That's odd, you said you swapped injectors from bank1 to bank2 already.

 

[zdl]

Yes I did