Got it.
So he gained almost 1-second in performance with just those mods? Not
bad if you ask me. :)
I was looking at possibly making the holes on the bellhousing slightly
more oval to allow for some sort of adjustment...but just think about
the tuning portion of it without a scanner.
- Bernd
-----Original Message-----
From: owner-dakota-truck@buffnet.net
[mailto:owner-dakota-truck@buffnet.net] On Behalf Of Dave and Charlene
Subject: DML: Re: RE: Re: RE: "Advanced" question for the experts
>
> So he ran a 14.4 "Bone Stock" and a 14.2 with all the mods???
> Something else is wrong here...and he's got all the "good stuff" in
> there but nothing to help is "breathe" better. (Hint hint...Throttle
> Body). ;)
>
No he had the MP PCM,headers,cold stat.,slicks to run the mid 14s. Stock
it ran 15.2s or so.
> I normally don't trust the O2 sensor voltages for A/F since their not
> a Wide-Band. Dyno testing for the A/F is normally the best route.
> (Same thing goes for A/F meters...stick a separate O2 sensor in the
> exhaust for them.)
Yeah its not 100% accurate, but atleast it gives an idea anyway.Problem
is ,nearest dyno is 4 hours away, and even then not sure if it has a
wideband O2 or not.
>
> On the timing issue, again...we can thank Dodge for that screw-up.
> Some run really aggressive and others...well...you've seen it on your
> buddies truck.
>
> Other neat little trick: Reset the PCM and then drive like a granny
> with the A/C in the ON position for about 100-200 miles. Then...take
> it to the track, turn the A/C off and you'll notice a BIG improvement
> in overall performance (and not just because the A/C is off.) The
> Computer thinks it's under a slight load at all times and readjusts
> the long-term for it.
Ok, I'll have him try that.Anyone ever try modifing a crank sensor to
advance the timing more? Not sure how much you could gain ,in deg. that
is.
Dave St.Louis
----------------------------------------------------------------------
98 GRAND CHEROKEE LTD. 5.9L {14.82@91}
89 LEBARON GTC Conv. Intercooled 2.5 {14.13@95}
88 SHADOW ES Intercooled 16V DOHC 2.2 {11.95@122}
89 SPIRIT ES
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