2002 Yukon XL Dyno runs
08-31-2015, 09:02 AM
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Staging Lane
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2002 Yukon XL Dyno runs
Here's the pulls form the Dyno this weekend. Test we done at Simon CPR in Richfield WI.
Truck is a 2002 Yukon XL 2500, 8.1, 3:73 gears, 33" tire. Motor is .02 over, Raylar BP202 cam, 1/2 completed modified stock airbox, and a Blackbear tune. Rest is stock.
Runs were done is 3rd gear. It liked it better when he rolled into it rather than punch it. I have EFI logs of the runs also if anyone wants to see them.
I have SW long tube to put on next with new mufflers and dual tailpipes. Will test again after that to see gains.
Truck is a 2002 Yukon XL 2500, 8.1, 3:73 gears, 33" tire. Motor is .02 over, Raylar BP202 cam, 1/2 completed modified stock airbox, and a Blackbear tune. Rest is stock.
Runs were done is 3rd gear. It liked it better when he rolled into it rather than punch it. I have EFI logs of the runs also if anyone wants to see them.
I have SW long tube to put on next with new mufflers and dual tailpipes. Will test again after that to see gains.
04-13-2016, 10:13 AM
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Follow up pulls. This is after putting on headers, dual mufflers, and dual tail pipes. Gains of 39 hp and 42 tq on 87 tune and 51 hp and 61 tq on 91 tune.
Tested at Simon CPR.
Tested at Simon CPR.
04-13-2016, 03:18 PM
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This is all great info! Now only the stock iron heads are whats holding you back from pulling to 6000 
Was the vehicle tuned with the cam or raw for the first round of tuning? Do you have a modified intake manifold yet?
Was the vehicle tuned with the cam or raw for the first round of tuning? Do you have a modified intake manifold yet?
Last edited by Raylar Engineering; 04-13-2016 at 03:30 PM.
04-14-2016, 09:06 AM
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Yes. It was Blackbear tuned and had your cam in it when it pulled the 282/351 numbers. Also a cold air intake. Wish I would have got a stock baseline.
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