You may have some detonation due to the fact that you ran 93
before the module. Higher octane gas burns slower, and can leave
carbon deposits in engines that don't need high octane.
From: DRD892@aol.com
Date sent: Sat, 16 Oct 1999 16:37:51 EDT
Subject: DML: 1st impressions of Hypertech Module.
To: dakota-truck@buffnet.net
Send reply to: dakota-truck@buffnet.net
> I installed the Hypertech Power Tuning Module Part # 972300 Revision B
> on Friday afternoon. I now have about 75 miles on the new setup. This
> is for the 1997 5.2 Auto/Manual Dakota.
>
> Installation was a breeze. The claim for the Hypertech is 20
> Horsepower and 30 ftlbs of torque. There is a marked increase in
> Horsepower but I have no way to determine if it is 20 or not. But
> I'll tell you that the increase in torque is there. No doubt. My Dak
> will burn the 255R70X15's right off the rims. The torque increase
> seems to be right off an idle all the way to redline. Another benefit
> I noticed is it smoothed out the engine. No more flat spots. Seems to
> start faster also. Throttle response is amazing.
>
> Problems. There are a few. The Hypertech demands 93 Octane fuel. I
> have always run 93 octane from date of delivery. But I picked up some
> detonation right away. Not bad, but you could certainly notice it. I
> was concerned that with any load in the bed it would get worse. I had
> Champion Gold Truck Plugs in the truck. Today I changed them to
> Champion Copper Plus one heat range colder. So far, this seems to
> have completely cured the problem. I can't be sure for a while yet.
> If it comes back, I will use some octane booster with each tank of
> gas. Small price to pay for the terrific benefits.
>
> The "Check Engine" light came on today. I tried to pull the codes but
> the scan tools showed no codes to see. The light went out by itself
> after about 1 hour of driving. I noticed no problems with truck
> performance while the light was on.
>
> I am satisfied with the Hypertech setup. I believe I got what they
> advertised. Really lit a fire in those tailpipes.
>
> The other modifications to the engine (before the Hypertech install)
> were: K&N FIPK, Borg Warner Brass Cap & Rotor, Accel 8mm Wires, 180
> Thermostat, Flowmaster 2-Chamber CatBack Duals.
>
> David R.
> Sterling Heights
> Michigan
> DC Detroit Axle Plant
> drd892@aol.com
>
|{eith R. Phelps
krp at netnitco dot net
Cat..... the other white meat.
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