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-   -   Home made boost controller (https://www.dieselplace.com/forum/63-gm-diesel-engines/21-6-5l-diesel-engine/347127-home-made-boost-controller.html)

Horse-Power 01-07-2010 03:27 PM

Your boost gauge looks just like mine and its in the same spot!....I had to do a double take.

cbr600rx7 01-07-2010 09:13 PM

LOL. Yeah it fit near perfect in there and for a little over 20 bucks the gauge works great.

I went about 100 miles of mixed driving on 1/4 of a tank. My truck is a 700R transmission with 4.10 gears and 275 tires.

RCpullerdude 01-07-2010 09:19 PM

Quote:

Originally Posted by cbr600rx7 (Post 3648120)
LOL. Yeah it fit near perfect in there and for a little over 20 bucks the gauge works great.

I went about 100 miles of mixed driving on 1/4 of a tank. My truck is a 700R transmission with 4.10 gears and 275 tires.

Should be a 4L80E unless it was swapped at one time, which would be crazy, though not impossible. 4L80E was the only auto behind the 6.5TD in a GM pickup/SUV from the factory.

cbr600rx7 01-07-2010 09:29 PM

Hmmm maybe i read the factory option list wrong then. Its a 4 speed auto but when i was looking up some of the option numbers i must have miss read it as a 700R.

cbr600rx7 01-10-2010 07:48 PM

Finaly got a good idea about MPG. Right now the truck is getting about 17-19 MPG in mixed driving on 4.10 gears. I have also noticed a lot more pick up during normal driving. The biggest improvement i would say is going from stop light to stop light where before the truck was making 2 pounds under light load its now making 4-5 and i dont find myself puting my foot on the floor trying to keep up with traffic any more.

dat1truk 01-12-2010 02:04 AM

i have the same gauge lol and did this with a piece of all thread a lock nut and spring to my 95 just bent the all thread into a hook and hooked it in the turbo cost less than 5 buks lol

cheap9665 01-15-2010 03:17 PM

i just removed the actuator and wired it fully closed. . . .gettin the gauge put in next week, wonder how much i can get out of it. only trouble i have had is when its under full load. . . .(gcvw over 25,000) it overboosts and takes away fuel

hydrotech 02-20-2010 07:18 PM

Since you are now making a few more pounds of boost over stock, shouldnt you turn up the pump a flat or two? I bet you could find some kind of progressively wound or 2 seperate springs to allow you adjustment for high and low throttle.

cheap9655- If you wire the wastegate shut, all exhaust gas will be pushed through the turbine wheel and the turbo will make as much boost as it can; boost pressure will now be fuel limited. Usually one would upgrade to a much larger turbo when going to a wastegateless design

Chevysrule454 03-05-2010 10:32 PM

If I find a older wastegate can i redo it to work on my 98 "f". Im not the brightest bulb in the room, but the picture of your 94 put the wastegate in a completely different spot than mine. I know iv read the other thread on the newer wastegate but i was just wandering that the older style seems allot easier to modifie (ie not having to search for the right spring etc.) and can i mod. an older one and use it on my engine?

extremeyoshi 03-06-2010 08:00 PM

Quote:
Originally Posted by cbr600rx7
LOL. Yeah it fit near perfect in there and for a little over 20 bucks the gauge works great.

I went about 100 miles of mixed driving on 1/4 of a tank. My truck is a 700R transmission with 4.10 gears and 275 tires.

Should be a 4L80E unless it was swapped at one time, which would be crazy, though not impossible. 4L80E was the only auto behind the 6.5TD in a GM pickup/SUV from the factory.


if his truck is a 93, its mechanical, and those indeed did come with a 700r4 behind them, no electronics for the 4l80 to talk to so they put in the 700r4.
i used to have one, and when taking her very easy down the highway i would get extremely good mileage, as she was only spinning at 1400 rpm at 65mph, like 25mpg or better.


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