icer Banned 2,335 Member For: 15y 7m 17d Gender: Male Location: Aspendale, Vic. Posted 02/09/10 10:57 AM Share Posted 02/09/10 10:57 AM what the? Where?! has it already started? Link to comment Share on other sites More sharing options...
RAP1D Member Donating Members 3,739 Member For: 18y 9m 14d Gender: Male Location: Sydney NSW Posted 02/09/10 11:43 AM Share Posted 02/09/10 11:43 AM Been playing with E85 in mine... these fuel rocks! Soaks up loads of psi and timing, soon as its available in a few more servos I'm going to use it as a daily mid 400 tune Link to comment Share on other sites More sharing options...
icer Banned 2,335 Member For: 15y 7m 17d Gender: Male Location: Aspendale, Vic. Posted 02/09/10 01:10 PM Share Posted 02/09/10 01:10 PM how do you tune it though? to 70% or to the 85%? As the caltex bio fuel is rated at 70-85%. Id be scared to get a 85% full blend and have it tuned, then fill up from another servo and its only 70%. Wouldnt you risk to blow the motor etc? Link to comment Share on other sites More sharing options...
RAP1D Member Donating Members 3,739 Member For: 18y 9m 14d Gender: Male Location: Sydney NSW Posted 02/09/10 01:30 PM Share Posted 02/09/10 01:30 PM Nah you dont tune it a percentage, you tune the same as you would for 98, targetting the same AFRs.The main difference is E85 takes around 20-30% more fuel to make the same AFR... so for example, the max power you may get from 60lb dekas, you'll get from 80's, roughly speaking.So for E85 you need to add in alot more fuel than you would for 98 to make the same power, but kicker is you can add ALOT more spark timing than you could for 98, and more timing makes more power... same deal as race fuels, toluene additives ect... oh and it'll take more boost befor it detonates.So if your planning a strong 450wk tune, its a good idea to run around 1000cc injectors and 1200hp of fuel supply, so in my case two 044s.I have a wideband 02 permenantly set up in the car so I can monitor AFRs as I drive.With E85 the chances of breaking the motor are alot lower, for a given psi that is... I'm happy to feed my stock motor 22psi on 98, and 25psi on E85, maybe more but we're not at that level of "ballsyness" yet lolThe first thing you notice with E85 is the idle is silky smooth, the motor will rev and respond faster, power delivery is very very smooth and can be more linear.We are constantly writing new tune files and trying them in the car on the street... not for max power,that's dyno only, but for midrange pull, throt response, idle , cruise ect.I'm lucky enough to have two awesome tuners both with different approaches to tuning helping out with the tuning, one here and one way over west.Right now we are just working more so on a strong 22psi tune for 98, then spend more time in finishing a polished E85, 25psi tune, but we've pretty much nutted out the do's and donts of E85, so will be able to get right into soon and hammer the motor I still can't get over how much boost we could use on E85... same boost on 98 and I'd be on the phone to Brad by now lolE85 = Good times! Link to comment Share on other sites More sharing options...
RAP1D Member Donating Members 3,739 Member For: 18y 9m 14d Gender: Male Location: Sydney NSW Posted 02/09/10 01:34 PM Share Posted 02/09/10 01:34 PM I just re-read your post mate, yeah if it was tuned on 85, then you filled with 70 it would run richer, prob not by a huge amount... tuned on 70 and running 85 it would run lean, so I'd be tuning on 85, and then checking AFRs on 70 to see how rich its going... or have a second tune for 70.So not quiet perfect yet... Link to comment Share on other sites More sharing options...
icer Banned 2,335 Member For: 15y 7m 17d Gender: Male Location: Aspendale, Vic. Posted 02/09/10 01:48 PM Share Posted 02/09/10 01:48 PM if the pumps had a reading of the ethanol blend, on the pump, to let you know its 70 - 85% that would be great! Link to comment Share on other sites More sharing options...
SuckSqueezeBangBlow ʎǝʞuoɯ ɹoıuǝs Donating Members 1,808 Member For: 16y 2m 18d Gender: Male Posted 03/09/10 03:31 AM Share Posted 03/09/10 03:31 AM hey Chris, stoich for e85 is 9.7:1 AFR, so I'm assuming if I don't recalibrate my wideband setup to suit, the gauge will show richer than using 98? Link to comment Share on other sites More sharing options...
Turbo6FG Silver Donating Members 497 Member For: 15y 4d Gender: Male Posted 03/09/10 03:52 AM Share Posted 03/09/10 03:52 AM In the USA some of the pumps have seperate tanks & you can key in the % blend before you start filling up.Wish we had it in WA, I might start lobbying my local MP Link to comment Share on other sites More sharing options...
IH8TOADS Silver Donating Members 3,618 Member For: 19y 7m 26d Gender: Male Location: OZ Posted 03/09/10 05:35 AM Share Posted 03/09/10 05:35 AM (edited) hey Chris, stoich for e85 is 9.7:1 AFR, so I'm assuming if I don't recalibrate my wideband setup to suit, the gauge will show richer than using 98?When using ethanol blends think lambda not AFR. If your E85 and 98ron tunes are calibrated for the exact same lambda then you will see the exact same AFR on your meter as what you would for your 98ron tune. Edited 03/09/10 05:35 AM by IH8TOADS Link to comment Share on other sites More sharing options...
qikin71 Member 60 Member For: 15y 7m 18d Gender: Male Location: Melbourne Posted 13/09/10 12:10 PM Share Posted 13/09/10 12:10 PM if the pumps had a reading of the ethanol blend, on the pump, to let you know its 70 - 85% that would be great!The Caltex is 70% winter blend for easier starting. I went off E85 for a a bit due to cold morning starts. Havn't tried the Caltex cocktail yet , but a mate has been using it and reckons no problems on cold moorning starts. Link to comment Share on other sites More sharing options...
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