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For those who have installed the 10K mod, can I expect instant power gain as soon as i turn the key or does it run crappy for a while until the computer learns and starts compensating for the mod?
It was my experience that things happened right away upon initial startup. Especially when I went tot he 1. level. My idle smoothed out and the power rolled on much more easily. Even a solid duting of black smoke.
Worst case scenario: you overheat your turbo under heavy load because you dont have guages.
Butget a pyro guage and you don't have to worry. FWIW: After the 10k then the 15.6k mod, I noticed a very slight increase in ex temps and had no trouble keeping the temps low enough to prevent turbo damage. So if you do the mod w/out guages, and you just take things easy you should be ok. But eventually get some guages. It is worth the peace of mind.
I did the FPR shim tonight, can't belive it took me so long to do a 5 minute process. (5 min. because i had to get the magnet out after dropping the spring on top of the motor). haven't had a chance to drive it yet but I am probably just going to do a 15 k mod right off the bat tomorrow before test drive. I just wanted to know what to expect. Definitely have a pyro in the budget since i tow my 7500# toyhauler out to the desert 6-7 times a season. I will probably make up a 10k mod just in case i need to back it down some for towing.