2L8LUZ

Like the title says... I'm not looking for a Pros vs Cons conversation here..lol

Looking for feedback from those that have converted and can speak to the cooling benefits achieved running E-85, E-54 etc...

Oil Temps, Coolant Temps, Timing

What performance effects have you seen during the hot summer months vs 91, 93 octane in your prospective areas and enjoyment received by this...

This week I'm installing a BTR stage 4 cam, 1 7/8 Long Tubes-No Cats and a E-85 Tune... In AZ it gets up to 115 degrees easily during the upcoming months...

THX!!

Unreal

Very minimal to no difference in cooling in my Arizona experience. My car is flex fuel which IMO any AZ car should be, and switch off constantly between 91 and e54 and back when we had e85, e85. Never noticed a difference in operating temp, coolant or oil.

0DSX Tuning

If you have a car prone to running hot, you may notice cooler ECTs, but most cars with a properly functioning cooling system won't notice a difference from my experience.

Let me know if I can help. I offer super easy plug and play flex fuel kits.

2L8LUZ

Am I correct in understanding that the car will pull less timing due to the extreme summer temps?

russ472

depending on your tune, it is usually setup to pull more timing the hotter the intake air temps get.

When it is 90 or hotter, mine runs about 5 degrees cooler on e70. haven't monitored oil temp.

0DSX Tuning

The amount of timing that gets pulled from intake temperature doesn't have a modifier based on ethanol content in the ECM.

schpenxel

E85 is awesome, that is all

Unreal

Yes e85 is awesome and he should get a DSX kit, but not to make the car run cooler, but for the performance effect.

Suns_PSD

Interesting.

Dave, when you tuned my car you said something to the effect of "we are at the max allowable ignition advance on E85 with only 65% ethanol..."

I guess my understanding was that due to mechanical limitations timing was maxed out early, therefore my 'modifiers' might not come in to effect until much later (i.e. higher IATs than usual, etc...). BTW, the Haltech you recommended is a clearly a superior intake to the Vararam, but with the Haltech IATs are much higher in traffic as shown by the gauge in my car. Like a minimum of 20 degrees higher when stuck idling.

Could you explain this to me and specifically how my programming works and pulls timing?

Congrats on the new business venture on your own!

Thanks

As to the OPs original question I have not noticed any change in engine temps while street driving and I have not taken my car to the roadrace track on E85 as I would run out of fuel too quickly

0DSX Tuning

Your engine was able to make max power without the need for higher ethanol content because it isn't octane limited.

When dyno tuning your car, your IATs never reached a point that timing would be reduced, so that never really even came into play. It's fine for IAT to get high just sitting there idling (and actually preferred by OEMs for emissions). It should drop pretty fast when you go WOT though since you'll begin to draw fresh air.

But yes, the amount of timing pulled for IAT doesn't change based on ethanol content in the tune.

schpenxel

True, true