WATER /METH INJ Dyno Run results

[XfireZ51]

Tony,

I notice the dyno sheet says these are STD correction numbers. Any chance you have SAE correction or would these be available? If SGC has those on file, it can be easily converted using DynoJets WinPep software.

[Tony Davila]

Originally Posted by XfireZ51

Tony,

I notice the dyno sheet says these are STD correction numbers. Any chance you have SAE correction or would these be available? If SGC has those on file, it can be easily converted using DynoJets WinPep software.

I can get those from Aaron if necessary. Uncorrected HP was 447HP I heard him say. I'll give him a call later.

[alwayscode390]

Awesome test, thanks for posting that up for us.

Was your tune changed at all? I wonder if you could tweak more from messing with the timing, since your running higher octane when on the meth? ---

[Tony Davila]

Originally Posted by alwayscode390

Awesome test, thanks for posting that up for us.

Was your tune changed at all? I wonder if you could tweak more from messing with the timing, since your running higher octane when on the meth? ---

Originally Posted by rkreigh

cool stuff. I think running pure alchy would help on my engine as the CR has been bumped to 12-1.

but keep in mind the pent roof combustion chamber and dished pistons on the LT5 are very detonation resistant so the bottom line is that if your fuel and octane aren't detonating, you won't make much power.

we tried advancing timing on my motor and it didn't detonate, but it didn't make any more power either. the LPE calibration had like 31 degree and marc used 29 and it did just as well. LPE was hoping the engine would make a bit more power running race gas. wasn't needed.

no doubt that cleaning the carbon off and keeping everything clean will help the engine. one "bad side effect" of the LT5 is it tends to be a "carbon machine" and unless it gets enough time at WOT stretching it's legs, it tends to get carboned up.

from what I see on the direct injection engines, not having the fuel to help clean off the valves can be a real issue. so alchy injection into the intake to "rinse it off" makes alot of sense.

I run alchy injection on the TT Z06 and it allows me to crank the boost from 13 to 17 psi running pump gas. but the HP goes from 600 to 800 at the tires which honestly is more than I can hook up so it doesn't get used.

I'm going to run some through at a lower setting just to clean off the valves and pistons and see if it runs better as soon as we get some hot weather. (poor mans seafoam)

Read above, this may answer your question about advancing the timing. I believe more timing doesn't add anything with our engine. It is pretty much at its best.

[Tony Davila]

Originally Posted by alwayscode390

Awesome test, thanks for posting that up for us.

Was your tune changed at all? ---

Tune modified by Marc Haibeck for engine mods but not Meth injection. A/F ratio not really affected by added Meth being sprayed. Look at A/F ratio on Dyno sheets.

[XfireZ51]

Originally Posted by Tony Davila

Read above, this may answer your question about advancing the timing. I believe more timing doesn't add anything with our engine. It is pretty much at its best.

Tony,

On my last series of dyno tuning, I had timing cranked to 34D. No knock but when I dropped it to 31D with an AFR change, picked up 8-10rwhp.

[alwayscode390]

That clears things up.

I just was thinking the Syclone / Buick guys advance the timing and add more boost when using the meth ... big hp gains follow

Thanks ---

[Tony Davila]

For those who missed my installation pictures.

Originally Posted by Tony Davila

Located the pump on floor, I used the stock C4 radiator overflow container. Painted it black crinkle and plummed it for the juice. It holds 1 gallon of boost juice.

You will notice that I installed a on-off switch to the pump. This lets me test the system lights and switches and prevents it from coming on if I don't want it to.

Installed switches just below dash with power on LED (green). Red LED is my activation light.

Vacuum activation switch fits nicely into fender and vacuum source to manifold.

Tapped IAT port for injection of Meth and covered it to look factory.

[Tony Davila]

Originally Posted by XfireZ51

Tony,

On my last series of dyno tuning, I had timing cranked to 34D. No knock but when I dropped it to 31D with an AFR change, picked up 8-10rwhp.

That is cool, I didn't want to modify my own calibration just for the use of water/meth injection. I didn't want my engine dependent on using it all the time, only when I deemed necessary.

[alwayscode390]

Do you have it spraying at a certain RPM , or just when you manually turn it on? ---