I'm looking into getting a light weight battery for my track car. The batteries with cca's close to my heavy OEM battery don't offer a lot of weight savings.

The lowest it gets around here is mid 20's, so I assume once the season starts I wouldn't be dealing with temps any worse than that hopefully. On these colder nights I have to crank 10-15 times to get the car going.

That said, are any of you guys out there getting away with a battery that has lower cca's than stock while running e85?

edit - This is for an STi, so tuning suggestions won't be of much help.

 

nope....I constantly have to pull my jump box out to help my car start...cold and e85 kills my battery quick.

 

http://www.braillebattery.com/index....teries/b14115/

 

Darn. What battery do you use, and how many less cca's does it have compared to OEM?

Thanks? Your 1 post on this forum so far has been very helpful.

 

Odyssey pc680

220cca.

Awesome in summer and warmer weather...but after about 40 degrees it sucks!

 

Your welcome!!!!!

 

Omg 220 cca is in my eyes is retarded, I rather get a optima with 1000, take the 10 pounds and happy with less stress on my starter/everything. Plus I won't have to get my *** in the cold and jump her lol

 

I have the mini battery, hawker genesis. Used the same brand three straight years in a row up in Tahoe where some mornings it's in the teens or single digitis and the car is covered with snow.

Car starts right up, no problem.

Make sure your cold start tables are tuned correctly for E85. If you have to crank the car 10+ times when it's cold, it's the tune, not the battery.

 

X2 - as an example our small fleet of factory made FFV's start on E70 exactly the same as if on gasoline- no matter how cold. I wish I had the timing and cold start enrichment maps for them. Only FFV i ever had problems starting was aTaurus FFV which started great in cold weather but had a warm start algorithim problem in warm weather on summer grade (e85)-- an ECU flash fixed that once Ford wrote the correct program.

 

Lithium battery. You can set it up so it has whatever amount of CCA you want.

/thread

 

You need your Cold Start Enrichment tables adjusted (Im on Tephra 5.1) I had mine changed & it fires usually on the 1st or second crank

Even though I live in SoCal, my PC680 has lasted over 3 years

 

I run have run my evo on E85 and mini battery for 1 year now without problems. I have to crank 1-2 times usually. Dekka 14 lb version.

 

Which rom are you running? And which tables are you changing in your rom?

 

This is pretty much a full on race car. Since most of the race season it won't be that cold, I think I'll get the lightest I'm willing to spend on and deal with whatever cold issues.

Should have mentioned this is an STi. It has 2000cc injectors and is pro-tuned with an Accessport. I tune my Evo myself, but Subarus seem so much more complex so I leave that up to a pro.

I've taken some general physics courses, but am pretty clueless when it comes to different battery technologies. How do you set up a battery to whatever cca's you want?

 

Depends on how you have the cells arranged. (series and parallel)