Water Meth Inj for intake heat soak

[Fast355]

Is that with the van? Do you suffer from heat soak lack of acceleration also? What do you got now a 383?

Yes the 97 Express. It has a ~500 hp 383 in it so lack of acceleration is relative. Even on E85 it probably loses a good 50 number tq/hp due to heat soak until it has been rolling a couple of miles and the IATs drop. Even when it is 40*F outside the IATs will heat soak up to 120-140F idling around town. The 96+ vans might as well have an open cone filter under the hood. They run maybe 10F warmer than ambient at 70-80 mph on the highway but heat soak badly as soon as you slow down. GMs air box design sucks on the vans. The older G-vans were not quite as bad but they also have high IATs with the air intake drawing hot air off the ac condenser. The vans have heat soak related fuel boiling issues as well that GM never corrected even in the LS powered vans. On a hot restart it is typical for them to stumble and run crazy lean. You can actually hear the fuel boiling in the TBI or fuel rails in the summer after you shut the engine off. The boiling fuel sounds like a perculator on top of a hot woodstove.

[ralmo94]

Seems like my truck don't like to cool down once it gets heat soaked. Every time I stop for gas I leave the hood open the whole time until I'm ready to roll again. Seems to be the only thing that helps so far.

Not sure if I'll get time to wire the meth back in or not. Too busy working on junk farm equipment. And I leave town again Sunday morning. The week off sure went by quick.

[Fast355]

Seems like my truck don't like to cool down once it gets heat soaked. Every time I stop for gas I leave the hood open the whole time until I'm ready to roll again. Seems to be the only thing that helps so far.

Not sure if I'll get time to wire the meth back in or not. Too busy working on junk farm equipment. And I leave town again Sunday morning. The week off sure went by quick.

I would consider enabling the electric pusher fan to run for about 4-5 minutes on shut-down. I did on my Tahoe with the 0411 running it and it helps cool things off a bit on shut-down.

[ralmo94]

I would consider enabling the electric pusher fan to run for about 4-5 minutes on shut-down. I did on my Tahoe with the 0411 running it and it helps cool things off a bit on shut-down.

One of the things I look forward to with the 0411 swap. Still on the black box. I got the pin out printed, spare pins, pcm and harness connectors, just not the time to diagnose if I get a pin wrong. I even bench flashed the 0411. Another thing I'm looking forward to is better tcc control and more options drives me crazy that everytime I let off of the throttle it unlocks. Hp is supposed to have real time tuning with it too.