Dyno tune

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BigRay800

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Who can dyno tune a CBM 425 ls motor? Motor has no response under 2500 rpm over 3000 rpm it’s a rocket.out in glamis for the month.
 
Have you already checked fuel pressure and fuel filters? Did it just start doing this?
 
things to check if it ran properly once upon a time

bad TPS
bad MAP sensor or leaking line feeding it
faulty fuel pressure regulator, or a leak in the line assuming its manifold pressure referenced.
loose or bad plug wire(s)

could be other things but these would be the most obvious

usually they crap up top if the filter or injectors are clogged

make sure there is no play in the throttle cable, assuming its mechanical
 
Ed at SU has a hub dyno, Nick at Hustler rents 1/2 the shop and Ish tunes them. One stop shop they can diagnose it, fix it & tune it.
 
BigRay800 said:
Who can dyno tune a CBM 425 ls motor? Motor has no response under 2500 rpm over 3000 rpm it’s a rocket.out in glamis for the month.
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If you’re in Glamis for the month reach out to Steve Cole and see if he can clean up the tune for you, I believe he’s out there all month also.
 
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