3400 tb swap

[frank b]

I'd like to start with a tb swap, 3400 tb onto my 3100. Will this require a re-tune?

1997 Lumina 3.1

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[SappySE107]

Nope, slap it on and go. Tuning would help even a stock car but you certainly won't require a re-tune for the 56mm throttle body.

[robertisaar]

this is very true. going from 52 to 56 won't change AE characteristics that much.

[frank b]

Thanks, so if it doesn't change things too much, is it worth doing? Will I notice a difference at all?

[SappySE107]

You can tune and get better performance from it. You asked if tuning was required, and it is no where close to required. You will see a noticeable gain. Every 3100 owner should do this swap.

[frank b]

Thanks, at some point I'll do the top swap, but one thing at a time.....