Warrtalon, I'm not saying that water + meth results in a higher effective octane than straight meth...

I'm just saying that, for example, a 12.5:1 mix has a higher effective octane than a 11.5:1 mix simply because there is less 93, but the same amount of meth

And yes, I would not run this aggressive tune on a road race, but I will run the same 50/50 mix, so it will be somewhat close.

 

Very Nice

 

Bump for a vendor with great service.

 

lets not forget to change those plugs!!!!!

 

I had a feeling, but didn't want to ***-ume.

What peak timing did you end up with?

 

I kind of suspected something other than boost too, but at that RPM, I think it's probably a combination of things coming together at that rpm. Boost falling off, timing and stock cams/manifold breathing, etc. The PERFECT STORM.

 

Yes, but then that takes us right back to the question of why you want to run water at all. You can run 12.5:1 with 100% meth just as well as you can with 50/50, but with the 100% meth, it would give more power. You said you were running water so that you could put in less fuel and thus have a higher effective octane. I think you got it all mixed up.

If I'm the one confused, please someone edify me.

 

How much more, on average, do you think 100% meth would make over a 50/50 mix at this level of modifications? I know it will be a rough estimate.

 

How are you guys holding this much boost? I can only hold 21 to red line (aem reading) and trapped 123mph....if i could get the boost up...

 

Ecu-boost and a good actuator.

I've seen anywhere from 24psi to almost 26psi at 7600 rpm.

 

Actually I said:

I merely stated after the fact that I can still get a high octane benefit from the meth because I don't need to add fuel to keep temperatures down.

Warrtalon, I understand where you and others are coming from... I respect the fact that 100% meth can make more power than a 50/50 mix... but my point is, the injection system can be used not only for power but for cooling capacity and safety... which is what I've opted to do since the car will be road-raced.

As cool as it would be to run a few more degrees of timing on a single dyno pull or a single pass on the quarter mile, the reason I've added the kit is to run 50/50 mix, and to get the combined benefit of more octane and more cooling capacity.

 

It's not registering. The cooling effect is outweighed by the octane. You can make more power with the 100%, or you can make the same power with lesser timing/afrs. You said this tune/boost was NOT going to be used on the road course, so that's what I'm confused...

I ran HPDE and time trials the last 2 years at a high level on 100% alky - no need for water. Just letting you know...

 

Do you guys think upgraded rod bolts would be worthwhile at this power level?

While some of you think the water serves no purpose, there is the fact that at 50/50 the mix is no longer a big fire hazard. Also, I think that the whole water vs methanol has more to do with correct tuning for what mixture you are running. It's easy to tune for 100% methanol. However if you use that same tuning style for 50/50 or 100% water, you will make less power.

 

Methanol pumps on some kits don't like 100% mixtures as they eat away on the pump diaphrams.

 

^^^ yeah, my AEM meth kit manual recommends no greater than 50/50...


So that's why I'm running 75% meth/25% water ---> to make more power!!!!!