This should be good:
http://www.audizine.com/forum/showthread.php/685825-JHM-TUNE-Blown-RS4-Motor?p=11319064
[QUOTE=Bootleg25Q;11319024]I’ll make this as short, and simple as possible.
My 2007 RS4 motor is blown. The motor had a JHM TUNE, and was otherwise stock.
The tune has been on the car for approximately 1 year and 20k miles.
I began having an intermittent misfire on cylinder 3. MIL started coming on and would stay solid for a few minutes every few drives. I replaced all 8 spark plugs, and all 8 ignition coils.
2 days later, the misfire(s) spread to almost every cylinder, triggered a flashing MIL, and immediately started hesitating/shaking the whole car.
Saturday morning I had a Leak Down test performed: cylinder 3 had 55 PSI. Boroscope showed the top of the piston is fried and cylinder walls are badly scored. In addition, several other cylinders were dangerously low compression and also beginning to show scoring. Multiple different reputable (including some that are Audi certified) mechanics have agreed that this is a detonation issue caused by the timing of the JHM Tune.
My motor was inspected and tested in February and the motor was deemed healthy at the time the JHM Tune was flashed. It had 115k miles.
I’m only 48 hours into compiling the documentation for my motor. I’m also just beginning to collect documentation from multiple people who have blown their RS4 motors that had the JHM TUNE.
I am astonished at how quickly people have started coming forward when they heard about my motor and had the same suspicions regarding their BLOWN MOTOR and JHM TUNE.
If you have experienced issues that are, or that you suspect are related to a JHM Tune, please send me a PM.
Audizine is about the most predictable place on earth, so let me address a couple things before the band of merry men start spewing:
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“Your car was under maintained” - My maintenance was up to date.
• Carbon clean – Performed December 2014, 25k miles ago (5k miles prior to JHM Tune being flashed)
• Ignition – All 8 Spark Plugs and all 8 Ignition Coils replaced December 2014, 25k miles ago
• Fuel – Pumps tested and Filter replaced, February 2015 20k miles ago.
• Fluids – Oil changes at 4k mile intervals M1 0W-40. Transmission and Brake fluids flushed February 2015, 20 miles ago.
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“Your car is high mileage” – I won’t waste my breath on this until the first idiot decides to use this crutch. This is not a 130k mile motor. It was healthy and maintained at the time the tune was flashed. Of the 10+ people that have come forward, every single motor has different mileage (very low, and high).
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