The new truck goes to the tuner tomorrow but I'm very concerned due to the conversation I had with him today.
He warned that the:
- driveshaft can fail
- tires can come off the rims or explode
- supercharger belt can shred
- boost on deceleration can blow the intake off the motor or blow the engine
Engine Specs:
2001 Lq4 stock unrebuilt with 80,000 miles
whipple blower with blow off valve set to stay constantly closed (bypass)
65 lb injectors, removed whipple computer
His statement is that as a tuner on a dyno he is going to redline the motor and get it running as fast as possible.
1) Why did he resist the idea that the dyno be used to dial in the motor at low boost (5 psi) and low rpm where I actually spend all my time driving it? On the street I've never given it more than 50% throttle because after that it just makes more noise but doesnt accel any quicker or it just burns the tires at lower speed.
2) How likely are the above failures to occur and how can they be prevented?
3) Am I wrong for thinking that speed limiting the computer to 98mph and keeping the engine under 4000 rpm is a good idea?
If something breaks minus the belt tomorrow I am completely screwed. This vehicle is my work truck / daily driver and not only can I not afford the downtime but I have no way of paying for a new engine.
What should I tell the tuner? What procedure should we follow for the tune?
The only thing I can think of that I will do tonight is put the whipple blowoff on a switch on the dash so I can release pressure before I release the throttle.
Someone help me sleep tonight because its looking like I'm not going to get any.
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