do i need a reburn after heads and cam

[jetmech]

I have t-plus w/ extender chip im doing heads and cam this winter does my chip need a re-burn. rest of combo in my sig. thanks

 

[Mike Licht]

depends on the cam. The most it will need is more idle speed. Fuel will be taken care of by the extender when it sees the extra airflow
Mike

 

[jetmech]

218/218

 

[jetmech]

flat tappet

 

[Mike Licht]

what did you ahve before?

 

[jetmech]

stock

 

[PowerKraus]

Either just get your vendor to burn a new one, or best yet, log some low boost WOT runs and see how your o2s look. Better yet if you have access (dyno shop?) to a wide band. BUT, when you are logging, do not keep your foot in it if you see/hear any detonation.

Personally, I would 'carefully' run it first and review the logs. Then determine if you need a new chip or if you can tune it via t+. Over the years, I have noticed that I only needed a chip when I changed injectors. When I did mods like cam or head porting, I could tune it with fuel pressure and the MAFT+.

Enjoy it !

 

[Mike Licht]

the extender will see the extra airflow so the fuel will be OK and you can tweak the translator. Timning can be adjusted by your + if anything the idle speed may need to be bumped if it stalls from the bigger cam. What is the chip number?
Mike

 

[jetmech]

My chip number is BS067B0F extender. thanks.

 

[Mike Licht]

that is an 800 idle chip, that may be a touch low for the 218/218 you sould be fine other than that. Try it and see if you have a stalling problem
Mike