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AFR too high - need help 

 

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 Post subject: AFR too high - need help
Posted: Tue Mar 08, 2005 12:25 pm 
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hey guys,

i have an EF I6 with pacemaker ext, hi flow cat, 2.5" exhaust, new o2 sensor, cleaned isc, 8.8mm leads etc...

i recently put in a crow stage 2 cam and put it on the dyno and its making s**t all power difference from before. the afr is up the s**t - its running waaayy too rich (using the same amount of fuel cruising as it should under heavy acceleration)...how can i change this to lean it out??

one suggestion was to put the vernier cam gear in it and play with the timing, anything else i should check?

thanks
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Posted: Tue Mar 08, 2005 12:28 pm 
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Adjustable fuel pressure regulator to lean the mix out across the board?

Or a chip to tune the air/fuel ratios in all conditions.

 

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Posted: Tue Mar 08, 2005 12:39 pm 
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hmmm... i have a funny feeling mine is doing about the same thing eh - i have a feeling its a little on the rich side with the same kinda mods - whats the cost/benefits of the adj fuel pressure reg? the chips seem a rather expensive way to go really - chiptorque ones start at min $600 or so for new ones, and are very basic in their capabilities - they can only be sent away for changes etc. was thinking about an EMS as per johnos (SVO XR6) but i don't have the justification for the cost with my minimal mods :?

 

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Posted: Tue Mar 08, 2005 2:39 pm 
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ajst fuel reg would be the way to go

Malpassi= $200ish

put on on, get it on the dyno and ajst till its rite
easy peezie

 

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Posted: Tue Mar 08, 2005 2:41 pm 
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SVO XR6 wrote:
ajst fuel reg would be the way to go

Malpassi= $200ish

put on on, get it on the dyno and ajst till its rite
easy peezie


for what i've got - worth the $$$? there seems to be constant soot on the back bumper on mine - which doesn't please me. where can i get 'em? thru scotty?

 

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Posted: Tue Mar 08, 2005 2:57 pm 
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you can..im looking at getting one soon, i will try and find a cheep "it fell of the back of a truck" deal ;)

 

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Posted: Tue Mar 08, 2005 3:00 pm 
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SVO XR6 wrote:
you can..im looking at getting one soon, i will try and find a cheep "it fell of the back of a truck" deal ;)


sounds good to me! i just wanna get the most from what i've got currently - so if its an adj fuel reg, so be it! :P

 

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Posted: Tue Mar 08, 2005 3:08 pm 
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yeh, it will do the job for what you want.

 

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