I have told a few people before about my JR tune and in this new forum it may be a good time to revisit.
I have spent about $5K on boltons to my 98 C5 Coupe it was a stick and had be OK but no screamer. TPIS headers added a bunch of torque. I had shifter problems and went to the B&M Ripper with a Tall MOMO Graphite knob, then the clutch fried twice so I went to the McLeod Alum flywheel and Heavy duty pressure plate, Master Cylinder and Z06 Slave.
The car rang pretty good but had a ping at the big end of 6,000.
I though I needed a lower gear and went to the Mallet 3.73 rear end.
All this helped but I kept getting a Knock Sensor error then my Battery pucked all over the PCM.
At this time I was encouraged to join Team ZR1, and meet JR on the web.
Several months later I bought Ease and LS1 Edit, and let him have at it.
After the third pass JR had transformed my Engine behavior.
He also diagnosed weak O2 sensors, low fuel pressure, hot IAT and intake vaccum leaks.
Once all the little issues were adresses then the last tune, and WOW!
The Cold air box, new O2 sensors and retorqued Intake, reset fuel pressure regulator all added up to a solid tune of the PCM.
We gained HP and Torque, drivibility, zero knock, gobs of spark advance to red line and just tire smoking ability through third gear. OK run flats but I want you to know JR made this car run like it had a new bigger engine. Revs came super fast, torque never quite, hit rev linmit all the time. And with my new shifter and clutch turnoff traction control this beast would lose it real easy.
Now, we are working toward a new level, 01 PCM update, 85mm MAF, Snow WI and retune. JR is a tough diagnostician. He can see cause and effect and still make sense out of wierdness to effect performance and reliability.
If you have done anything to you LSx and have not had JR simply look at a Ease scan you are just missing the boat. With that step JR can tell you what you need to fix, change or take off.
I had a TPIS MAF that he had me remove and go back to stock, the power went up! Go figure.
If you buy a JR read of a Ease Scan you will be impressed, then you will likely go on to get a real tune.
It will transform your car like you can't imagine.
And he will tell you what to fix that you think is just fine.
