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Originally Posted by billthomas
I think the mileage AFTER the IMSR was better than before, right Gary? If so thats what we normally see.
Really? What kind of "increase" in mileage do you see? Are you saying that the IMSR itself produces a noticeable improvment in gas mileage? Or the combination of new RMS, clutch, underdrive pulley, and a low-temp thermostat for good measure did the trick?
Also I'm curious why "400 evaluation miles"? Was a computer hooked up during this drive? Was the car "tuned"? It kinda/sorta sounds like "Freeis Bueller's Day off" to me. I you drove my car for 400 miles I would be pissed. Somebody would be walking with a limp.
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Generally those who have us do this procedure WANT us to put miles on the procedure before they drive several hundred miles home.. We always ask anyone who is going to have the procedure done if they have objection to me driving the car for at least 200 miles, if they do, then I won't do it..
Yes, we have gear that is used in the car to evaluate it both on the dyno and in my daily commute of 83 miles round trip per day. We can't drive all the cars for this extended period because their owners are waiting for us to finish, or because the car has to make a scheduled date for a return shipment home.
This is a major service, lots of things are taken apart and we must ensure they are correctly put back together without any oil leaks, weird issues, noises or even something as simple as clutch chatter. I'd much rather have ANY issues show up while the car is in my hands than the owners hands so they can be noted and addressed before the car leaves.
Because of this we attained and have maintained a 100% effectiveness rating with the IMSR procedure, if I did not drive the cars for this many miles I know of at least three that would have had an issue on their way home after the procedure.. two were slight oil leaks that showed up after the dyno evaluation, but within the first 150 road test miles. The third was a bad pressure plate that was bad out of the box. Not everything works perfectly every time, thats why we have to test what we do.
I have a firm policy, if someone doesn't trust me to drive their car for evaluation, they should seek out someone else to carry out their work. I have over a dozen cars, three of which are Porsches, I don't need someone else's car to go have fun in.
We only do things once.
As for the MPG increase, typically the IMSR will show a tad more MPG after it has been carried out and after the new bearing's break in procedure.. It always doesn't do this, but there are some good instances of it.