Re: Two barrel TBI must have a flaw, I give up.

[rr <RRauscher@nni.com>]

That smooth/rough cycling coming up the rpm range can be
due to your ve tables being off. You are hitting rich then lean
areas as you go.

>From what I understand, you have at the least changed the
cam. If so, then the VE tables are entirely incorrect. They
will need to be tuned to your combo.

BobR.

olbap wrote:

> Thanks Grump, ill see about rigging that up
>
> I seem to be making progress juggling the BPW and ve tables, it feels like
> its pulling up to about 5000 now which is a big improvement, which
> incedentally was the result of lowering my bpw to115. Only problem now is
> that it doesnt pull much past 5000 and according to the o2 (which ive found
> is next to worthless for tuning, dont know if it got that way or its always
> been) its going lean.. dropping down to .7, its also not so smooth going up
> it seems to cycle between smooth and rough coming up the rpm range despite
> it pulling what 'feels' to be the same. So now im faced with increasing the
> BPW to give me more fuel at the top which of course will mess me up on the
> bottom end.  Is there any calculation out there to know what  is the
> equivalent percent VE change a BPW change will have? In other words, if I
> raise my bpw from 115 to like 125,  what % would I have to lower my ve to
> equal the same amount of fuel added prior to the bpw change at a given point
> on the map?
>
> Sorry for asking so many questions, if this has been covered just let me
> know and Ill go look for it, hate to be a nuisance
>
> Pablo
>

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