Rolling Road

I managed to book in a slot at Specialist Technical Solutions rolling road up here in Shetland while liaising with Dave at Canems to ensure the car was going to run as good as she could.

Ray got to work strapping the car down and started the tune after a good chat with Dave regarding the software and tune.

My engine isn't a standard LS7, it has had a camshaft and other various internal items and if you remember clocked 620bhp on the engine dyno.  I was expecting less power through the drivetrain and with the lesser quality of fuel up here (Far from super unleaded) so we put it to the test.

A good few runs were done and the basic tuning was put in place.  There was however a slight misfire at higher revs.  After speaking with Dave he confirmed that it appears when I got my engine it had been supplied with aftermarket coil packs and these could potentially be the route cause.

I ordered genuine GM ones from Rockauto.com along with spark plugs and leads.  

• Coil Packs - GM 12699382
• Spark Plugs - ACDelco 41-104
• Leads - GM 748UU

Once these were fitted, the misfire was gone and the rest of the tuning could take place.

I requested that the car didn't need to have every ounce of power extracted from it, as long as it was comfortable and smooth to drive.

Ray comfortably got 544 bhp and 562 ft.lbs of torque with no sign of pre-detonation.

Once on the road we can fine tune it.