afr readings
#1
Boost Builder
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is there a afr advisable if you havnt a egt gauge fitted, ive got a wideband for the motor when it lands and have been told that the mods the car has will make it overfuel and it will need trimming abit,but how much dare i lean it off as havnt a egt?
#2
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Who told you what?
What mods?
The problem with leaning things off a bit to sort it out being too rich in one place is that normally results in too lean somehwere else.
But to answer the question, depending on the amount of load it will generally go from about 11:1 to 15:1 in terms of what is acceptable
Ie 500bhp cossie @ 2 bar of boost = 11:1
cruising on motorway at vacuum = 15:1
What mods?
The problem with leaning things off a bit to sort it out being too rich in one place is that normally results in too lean somehwere else.
But to answer the question, depending on the amount of load it will generally go from about 11:1 to 15:1 in terms of what is acceptable
Ie 500bhp cossie @ 2 bar of boost = 11:1
cruising on motorway at vacuum = 15:1
#3
Boost Builder
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binliner stage 1 mods m8 (decat,stainless,uprated turbo elbow and downpipe,induction kit) running 10psi is known to make em rich and need trimming
#7
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Originally Posted by TiB
I'd say 11/1 is too rich personally,
but it'd be safe![Wink](https://passionford.com/forum/images/smilies/icon_wink.gif)
but it'd be safe
![Wink](https://passionford.com/forum/images/smilies/icon_wink.gif)
he did say without any EGT, so its better safe than sorry really IMHO.
Those safcr things are pretty easy to use, so not a bad way of doing it, but for the money they cost, i would just get stu or someone to remap it
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#9
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Originally Posted by Danny@RADesigns
cant remap std ecus supposedly
and dont intend tuning as such just want to make sure what ive got already is safe ![Grin](https://passionford.com/forum/images/smilies/icon_smile.gif)
![Confused](https://passionford.com/forum/images/smilies/icon_confused.gif)
![Grin](https://passionford.com/forum/images/smilies/icon_smile.gif)
Fair enough
Well i would borrow an EGT from someone and then set it up using that too, as TiB says you want to be leaner than "really safe" ideally, but to do that you need to keep an eye on temps, especially if its on the standard turbo as they REALLY dont like a lot of heat (as im sure you of all people know!)
#10
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not sure if its got the shite unit on it as like i said not seen it yet,but 1st obvious thing is steel up the std unit, have to see what turns up i spose lol
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