2011 avalanche Magnuson h.p

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05-08-2018, 11:08 AM

#11

1FastBrick

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Quote:

Originally Posted by tatt2oed

I am pretty sure after looking, I removed some wring and tubing from under the truck, that the previous owner had a methanol kit, since it has been removed, could the problem stem from that or in the tune?

The Tune will not cause that issue.

It's likely a loose wire somewhere. Check the fuse block connection, the PCM connection, check the grounds at the back of the block.

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05-08-2018, 12:10 PM

#12

tatt2oed

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I have checked grounds, new battery, have not checked ecm. Its just like someone turns the switch off. I don't lose the radio memory like a power loss, the engine revs like the trans is neutral, it makes that cycle, then its normal

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05-08-2018, 12:39 PM

#13

1FastBrick

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Could be the ignition switch.

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09-17-2018, 10:46 PM

#14

tglandon

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i have mine supercharged and with factory magnason tune it was as advertised.. 100 hp and 120 lbs. Basically stock engine. So that put me at 350+ rwhp and 400+ rwlb. I got a Westers tune and it has a big seat of the pants feel but i havent been back to have it dyno'd yet. it does pull my 26 ft trailer alot better.