CobraJet wrote: ↑Sun Jul 08, 2018 4:56 am
Wow, oustanding milage on the W/I fluid! Just to be clear, are you injecting this before or after the I/C?
Injecting after the IC.
Nozzle #1 is above the TB at 1.0 gph and activates at 4 lbs. boost.
Nozzle #2 is below the TB just above the Tee at 2.0 gph and activates at 9 lbs. boost.
Revving to 3500 will make it go into boost and you need even less throttle to keep it from going higher....and then you get 4-5 lbs. boost and the first nozzle will kick on.
You can't really tell you have a turbo if you stay below 3000 rpm but it does have plenty of acceleration driving that way. It just gives you that extra low end torque and it doesn't even have to go into boost. It would be interesting to see how it drives without the turbo but I'm too lazy to pull the turbo and test it.......
So that said....the water tank can last a long time but it all depends on how you drive it. When I drive to work every morning I just drive normally.....going home it's the same way because I'm usually tired and want to just get home.
I can also turn off the boost control and WI and drive anywhere on the 6.0 lb. stock wastegate. That allows me to have 112 whp and 133 lbs. ft. torque and never worry about detonation or water.
Most of the time I drive the buggy and shift at 3000 rpm and it is just like a normal engine that never goes above 100 kpa. That 100 kpa happens at less than 50% TPS so you basically get full throttle torque at half throttle due to the turbo helping push air almost right away.
In normal driving I can get 114 kpa at 2800 rpm and 52% TPS according to my most recent log file.
I see 100.5 kpa at 2136 rpm and 45.6% TPS.
The turbo is actually working almost right away but you get used to it so you don't realize it anymore.
Studying the logs will tell you what the turbo really does. That's one of the best things about FI and Megasquirt.....you can actually see what the turbo does and make changes to get even better results.
The above is what makes it a great street driver.......not to forget that at about 3600 rpm it is over 21 lbs boost and 23 lbs. comes on at about 3800 rpm. It is back to a sort of laggy feeling due to the difference between 12-15 lbs boost and when it hits 23-24 lbs. Shifting fast and banging gears will keep that from happening but you have to go all the way to about 5200-5500 rpm.
The intercooler is doing a fantastic job holding the IAT's down on boost along with the WI. I'm seeing 78* F. at 23.8 lbs boost in the month of June with cooler ambient temps. That is on a short boost run though.......
When the ambient temps get to 85* F. then the IAT's are around 107* F. at full boost.
Long boosted runs will raise the IAT's as everything gets heat soaked.
