2001 Chevy 5.3L automatic to manual conversion question
Hello,
I have a gen 3 5.3L engine mated to a Porsche 930 manual transaxle. The tune file is from a stock 2001 GMC Yukon which was mated to an automatic transmission. The VE and MAF tables are dialed in (ported heads, cam, LS6 intake installed backwards, and headers) but I am experiencing an annoying idle problem where the desired idle speed will increase by 125 rpm after running the engine for a short amount of time. Reading through several posts I'm gathering that I should be looking for a comparable vehicle with a stock manual tune? VSS is also not wired in so the PCM does not know how fast the vehicle is moving.
If I do need to change over to a manual tune is there any way to do this without having to purchase another 2 credits?
I went to HP Tuners repository and grabbed a 2000 Camaro manual tune. Changed all the values in the transmission section over to the Camaros manual tune. Problem persisted.
Tried to do a transmission segment swap within HP Tuners using the previously mentioned 2000 Camaro manual and it would not give me the option to do so.
When I log manual trans gear and auto trans drive inside the scanner they both change rapidly back and forth from yes to no. The PRNDL status stays on D4.