Thread: E85 startup tuning???

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  1. #1 E85 startup tuning??? 
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    Hi all

    I have my E85 tune all set, very low knock and trims are good. I am having random starting issues when I startup in the mornings. The temperature is around 70 here in the AM. Is there a way to scan and tune just for startups? Any help is appreciated.

    Thanks
    2007 Grand Prix GT. Pacesetter headers, METH, E85, 60# inj, E85 pump, 1.8 roller rockers, CAI, HPTuned, 3.25 pulley, TEP transmission, 90# springs, rollmaster single chain, FP rewire, poly mounts/performance suspension, Impala front brakes d/s rotors. Past (Pontiacs) Grand Prix- 97 GT, 03 GT, 04 GT, 04 Comp G, 78 Trans am, 98 Trans Am.
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  3. #2 Re: E85 startup tuning??? 
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    Try adding some fuel in "Startup AFR Correction". E85 likes a rich start. May need to mess with Decay but I haven't messed much with that.
    Top Swapped 01 Imp
    VS (very small?) cam, SD Headers, 2.8" pulley, 29°, ported everything, E85, AEM water/meth, Deka 60's, HPT tuned
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  4. #3 Re: E85 startup tuning??? 
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    What AFR are you seeing on wideband when you first start it?
    Top Swapped 01 Imp
    VS (very small?) cam, SD Headers, 2.8" pulley, 29°, ported everything, E85, AEM water/meth, Deka 60's, HPT tuned
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  5. #4 Re: E85 startup tuning??? 
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    I will check in the morning. I have been driving so it’s starting fine now. Thanks
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  6. #5 Re: E85 startup tuning??? 
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    Also if your MAF table is off in your idle area it will affect your startup. I'm not 100% sure on your year but on my car maf controls about everything. I don't think the VE table does diddly. Just backup for maf failure.

    My startup is pretty decent, about 2 seconds to start. It used to be 5 to 10 seconds before I tune the idle area. Only thing I'm trying to figure out is how to get it to stay in open loop a little longer on startup. When it jumps to close loop too soon the computer starts pulling timing to get the idle under control. Makes it run just a little rough.
    Top Swapped 01 Imp
    VS (very small?) cam, SD Headers, 2.8" pulley, 29°, ported everything, E85, AEM water/meth, Deka 60's, HPT tuned
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  7. #6 Re: E85 startup tuning??? 
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    Of course it started fine today. The AFR gauge restarts while I am cranking so it’s hard to read it . When it powered on it was about an AFR of 9.0
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  8. #7 Re: E85 startup tuning??? 
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    I’m trying to get HPT to add the Base Fueling>Crank vs Coolant temp to the editor.
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  9. #8 Re: E85 startup tuning??? 
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    Well they just shot me down because they do not have the address to the parameter. Those guys are about worthless.
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  10. #9 Re: E85 startup tuning??? 
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    Yeah probably not super accurate until the sensor warms up. Takes a few seconds I imagine. But you might be super rich in those MAF cells. I knew I was because my iac would be wide open making a loud sucking noise. Do dbw cars have an iac? Try leaning it out in idle cells and below.

    I wish hpt would add more tables. I check after every update. Doubt it's ever gonna happen.
    Top Swapped 01 Imp
    VS (very small?) cam, SD Headers, 2.8" pulley, 29°, ported everything, E85, AEM water/meth, Deka 60's, HPT tuned
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  11. #10 Re: E85 startup tuning??? 
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    Nope won’t happen unless we can request with the address. Then they will add it. I think someone with tiny tuners may be able to get it. I have tiny tuners but no way to open my HPT file there.
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  12. #11 Re: E85 startup tuning??? 
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    Yeah, and I lost my DHP tuner...think someone threw away the bag it was in Was pretty bummed to realize that. Still hurts to think about. But I still have no idea how you would find the "address". That's like coder talk.
    Top Swapped 01 Imp
    VS (very small?) cam, SD Headers, 2.8" pulley, 29°, ported everything, E85, AEM water/meth, Deka 60's, HPT tuned
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  13. #12 Re: E85 startup tuning??? 
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    F#*k HPTuners “support”. They never really support. Just the run around. They delete posts in the forums that call them out.
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  14. #13 Re: E85 startup tuning??? 
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    Lol. It's great software but yeah. Well, their scanner is nice. Wish I still had my DHP for tuning though. Also I love how hpt has promised to release all these new pro features since before the mpvi2 came out. Still not a word about them. Standalone tuning would be nice, and wireless flashing. And the hub with all the inputs.
    Top Swapped 01 Imp
    VS (very small?) cam, SD Headers, 2.8" pulley, 29°, ported everything, E85, AEM water/meth, Deka 60's, HPT tuned
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