Tuning base GT?!?

[Junkyard Dog]

1. The ECU can guess based on AFR etc and add fuel accordingly (the 'old' way, called a flex tune), or​

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2. the flex fuel logic can be enabled in the ECU. Or,​

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3. you can run an e85 specific tune that basically just adds way more timing and fuel. In that case the ECU doesn't really know and it just set up for e85​

3 - is standard.

2 - is this a thing on S650? How does it work? I think the S650 lacks something to make this option work.

1- there are some tuners offering this. Some criticize it. Others love it. I haven't tried it.

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[vaporbluestang]

There's a few answers to that question. The ECU can guess based on AFR etc and add fuel accordingly (the 'old' way, called a flex tune), or the flex fuel logic can be enabled in the ECU. Or, you can run an e85 specific tune that basically just adds way more timing and fuel. In that case the ECU doesn't really know and it just set up for e85
[/

1. The ECU can guess based on AFR etc and add fuel accordingly (the 'old' way, called a flex tune), or​

​

2. the flex fuel logic can be enabled in the ECU. Or,​

​

3. you can run an e85 specific tune that basically just adds way more timing and fuel. In that case the ECU doesn't really know and it just set up for e85​

3 - is standard.

2 - is this a thing on S650? How does it work? I think the S650 lacks something to make this option work.

1- there are some tuners offering this. Some criticize it. Others love it. I haven't tried it.

All - just quick update. I reached out to Lund racing and few others. Below was the response I received from Lund customer support.
I really don’t understand necessity if we don’t gain anything on 91 tune and e85 we may? What’s use of tuning?

Shoemaker, wengerd support and DRP responded saying below.
Out of 3 only DRP was able to give apporx hp gain with tunes. Think I’m gonna go with DRP for now.

 

[ZXMustang]

Damn you really polled the audience didnt you lol.

 

[vaporbluestang]

Damn you really polled the audience didnt you lol.

lol nah bro.. I was just trying to understand more and asked same question to everyone I met.. believe me I asked my coworkers who are car guys too. Maybe someone who doesn’t know more on tuning like me may get help from this now

 

[Sofa King]

1. The ECU can guess based on AFR etc and add fuel accordingly (the 'old' way, called a flex tune), or​

​

2. the flex fuel logic can be enabled in the ECU. Or,​

​

3. you can run an e85 specific tune that basically just adds way more timing and fuel. In that case the ECU doesn't really know and it just set up for e85​

3 - is standard.

2 - is this a thing on S650? How does it work? I think the S650 lacks something to make this option work.

1- there are some tuners offering this. Some criticize it. Others love it. I haven't tried it.

2 - requires a fuel sensor in the tank which reads ethanol %.

 

[ZXMustang]

2 - requires a fuel sensor in the tank which reads ethanol %.

No does not. The pcm infers the alcohol content via the widebands.

 

[Sofa King]

No does not. The pcm infers the alcohol content via the widebands.

Yeah, forgot about that... I guess I should have said "often uses"... as some do.

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