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Running PS4S Tires

Good morning yall. Need some help with very "harsh shift" on my procharged 16 GT. Here is the mod list. procharger P-1SC-1 boost level 10psi STG2 Air-to-Air intercooler MAF in intercooler DW95 injectors JMS PowerMAX Fuel Pump Booster System it is making a very harsh shift on sport mode, gear...

If we do not need a new calibration for adding a LTH, I can put the stock headers back on??? Also, on a stock tune we cannot run LTH. Does Roush tune makes a difference that we can run LTH?

which header are you running?

Wait... Think I am missing something here. is it fine to run headers without custom tune????

Happy new year everyone!!! Anyone recognize what this high pitched beeping noise could be? Seems like it happens after a start-up. Pulley? Belt noise?

Recently got my car re-calibrated as I got new wheels and tires... now it's shifting higher than usual and being Jerky. Also rpm hangs on redline (WOT). Roush told me to reset my transmission adaptive table to follow the instructions they gave me. But didn't get much information about the...

Quick question yall. Does NGAUGE reads IAT2'S? Also local person is selling NGAUGE but its married. Will I have issues reading the numbers?

Once you put the Roush supercharger, your ford powertrain warranty is gone. Roush limited warranty will replace your factory warranty. As far as warranty start period, it starts same as factory warranty. if you install the kit 1 year later with 10000 miles, you have 2yr/26000 remaining warranty.

I meant blower

Pmed you. Need to get warranty work done. Head unit replacement

Can anyone recommend me a trusting Roush dealer near GA?

I spoke with Gavin at Roush performance and they are sending me a replacement supercharger. Best customer service ever!

No codes, no rough idle. I thought it was some sort of vacuum leak and based on the gauge it was showing 19 inhg at idle, 8~12 at partial load, 0-3 at WOT, 21 when let off.

Anyone have an idea what this could be?

Can anyone help me with what this is? Driver side making air leaking noise and wondering if this is a vacuum leak. Would be great if yall can assist me with this. Thanks!

Thank you. I will be scheduling for the recalibration.

@hossman How much of a change is from 255/40/19 to 285/30/19 and 325/30/19? Going to change my wheels tomorrow but my dealer will not open tomorrow so I will need to drive the car without recalibration for about couple weeks. Lot to be concerned?

BTW. How can I find out whether it's left open or not?

I think it sounds more like a wind noise from the video, but that's the actual sound I hear in the cabin( The noise coming from the motor) can you hear that?