70mm TB

hytorksc

Registered User
Can anyone confirm if you need a tune when using a 70mm TB? Does it let more air in for a given throttle plate angle over the stock TB that causes a part throttle lean condition, leading to engine pinging? Can it throw off load and spark calculations?

thanks-
 
Last edited:
Chip

hytorksc said:
Can anyone confirm if you need a tune when using a 70mm TB? Does it let more air in for a given throttle plate angle over the stock TB that causes a part throttle lean condition, leading to engine pinging? Can it throw off load and spark calculations?

thanks-

You should not have any problems when just changing out a TB. For the most part it would have to do with the other mods involved.As far as a chip I will not get into that. It is left for some one like Dave Dalke to talk about. :)
 
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