Official OpenFlash Tablet FA20 Tuning Tech Discussion Thread

[jamesm]

Originally Posted by 2point0

I've been noticing some "cold start" issues lately as well. At first I assumed it was morning temps, but it doesn't get nearly as cold here as people who have legitimate cold seasons. But I had trouble starting yesterday afternoon when the car sat all night and half the day, but ambient temp was warm.

Basically, the first start attempt ends in sputters and the second try starts it right up. This morning I played with the throttle a bit on the first try and did get it to finally catch.

I'm on v1.42. Any thoughts? I think the coldest outside temps I see here are around 40-50 F.

if giving it throttle causes it to start, it's likely that the values in the cranking ipw tables are too high.

[EAGLE5]

I have had luck with very aggressive fueling on propel e85 cranking. Every time I back off, it doesn't start well. Pm me your email address and I will send you what I have.

[troek]

Sorry if this has been brought up before, but i havnt seen it. Im trying to familiarize my self with the tunes while i wait for my OFT, and i noticed it has a value for catalyst warm up, but its all zeroed out. Is the crazy loud valve over lap thing disabled in this tune. If not has anyone found a way to disable it? i dont mind 1500+ rpm idle while warming up but that 20 or so seconds of insanity has got to go!

[Luckrider]

Originally Posted by jamesm

if giving it throttle causes it to start, it's likely that the values in the cranking ipw tables are too high.

I couldn't believe that pushing the accelerator LOWERS the IPW during cranking (causing less fuel to be injected). The fact that it helps things get started makes sense after I did some research on e85 and its flash point, it made much more sense. It isn't a smooth progressive scaling for the IPW for e85 that is need, it is more like, like scaling from 30-50 degrees, a little bit more fuel down to about 10, and then things need to get aggressive.

[jamesm]

Originally Posted by Luckrider

I couldn't believe that pushing the accelerator LOWERS the IPW during cranking (causing less fuel to be injected). The fact that it helps things get started makes sense after I did some research on e85 and its flash point, it made much more sense. It isn't a smooth progressive scaling for the IPW for e85 that is need, it is more like, like scaling from 30-50 degrees, a little bit more fuel down to about 10, and then things need to get aggressive.

it does, believe it or not. there is a compensation for cranking ipw vs. throttle position... shown here:



seemed weird to me too...

[Td-d]

You beat me to it, James...

[Mirko]

Sup guys

I finally made my decision and chose the OFT over ecutek. I've done my homework and read all the FAQs and lots of threads about it, but I still have a doubt: will I be able to find a tune that suits my needs between the "off the shelf" tunes? I really have no idea of how many tunes are offered...

Cheers

[Shiv@Openflash]

Originally Posted by Mirko

Sup guys

I finally made my decision and chose the OFT over ecutek. I've done my homework and read all the FAQs and lots of threads about it, but I still have a doubt: will I be able to find a tune that suits my needs between the "off the shelf" tunes? I really have no idea of how many tunes are offered...

Cheers

Glad to have you on board! What other engine-related modifications do you have?

[Mirko]

Originally Posted by shiv@vishnu

Glad to have you on board! What other engine-related modifications do you have?

First of all I live in Italy so Im not sure if the tunes are going to be the same.. standard fuel here is 95 octane and I have a drop-in air filter, catless UEL headers and 2.5'' all-catless overpipe, test pipe and catback.
Thank you for your help and time

[Luckrider]

Originally Posted by Mirko

First of all I live in Italy so Im not sure if the tunes are going to be the same.. standard fuel here is 95 octane and I have a drop-in air filter, catless UEL headers and 2.5'' all-catless overpipe, test pipe and catback.
Thank you for your help and time

The regular Stage 2 UEL Tune will work for you, it just needs to match your CAL ID. 95 in Italy is like 92 here in the US if I remember correctly.

[Shiv@Openflash]

Originally Posted by Luckrider

The regular Stage 2 UEL Tune will work for you, it just needs to match your CAL ID. 95 in Italy is like 92 here in the US if I remember correctly.

I concur

[PMok]

@shiv@vishnu,
I have a question for you. I was talking to a local wheel & alignment shop and they mentioned that as part of the alignment they do a steering position sensor calibration, and that led me to ask whether that calibration info is stored in the same area of the ECU as is being reflashed (whether by OFT or Ecutek or other means). The shop owner/alignment did not know where that info is stored. But he said that the steering position sensor definitely is important to have calibrated, since it is tied into how the traction and stability control functions. And since the calibration is unique to each vehicle, it's something I'd worry about being overwritten using an OTS tune ... any ideas on whether that is an issue or not?
Thanks.

[jamesm]

Originally Posted by PMok

@shiv@vishnu,
I have a question for you. I was talking to a local wheel & alignment shop and they mentioned that as part of the alignment they do a steering position sensor calibration, and that led me to ask whether that calibration info is stored in the same area of the ECU as is being reflashed (whether by OFT or Ecutek or other means). The shop owner/alignment did not know where that info is stored. But he said that the steering position sensor definitely is important to have calibrated, since it is tied into how the traction and stability control functions. And since the calibration is unique to each vehicle, it's something I'd worry about being overwritten using an OTS tune ... any ideas on whether that is an issue or not?
Thanks.

It is not. Completely different computer.

[OmarYasin]

@shiv@vishnu sent u a pm regarding purchasing oft

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