Marty did the porting (yes I've heard good and bad things about his porting)
and I believe he sold me 10:1 pistons (8 years ago now).
How does the AEM compare to the Apexi?
You would recommend the 24# injectors no matter which piggyback is used?
--------------------------------------------------
From: "Bernd D. Ratsch" <bernd@dodgetrucks.org>
Sent: Tuesday, March 18, 2008 9:42 PM
To: <dakota-truck@dakota-truck.net>
Subject: RE: DML: Fuel Mix Computer
>
> I'm familiar with that cam - it's the same one in my new 5.9L and the same
> one I use on other builds I've done at the dealership. It also depends on
> compression ratio and how much porting was done to the heads (flow
> characteristics). Yes, it will run rich at idle due to the overlap - no
> way
> around that unless you either custom program the PCM or run a fuel
> "tuning"
> add-on.
>
> Best combination I've found (yes, on a dealership Dyno and fuel curve
> tuning) - AEM Piggy Back, 24# injectors, and an effective compression
> ratio
> right close to 10:1. It's much easier to take away fuel% with larger
> injectors than with smaller ones. The APEXi will help out quite a bit
> though - it took care of my rich condition at idle on the old V6 (10.5:1,
> .540" lift, 220 duration, and a lot of porting and CC work to the
> heads)...even passed a sniffer test on our emissions machine (without the
> cat - we were curious and had to check).
>
> - Bernd
>
> -----Original Message-----
> From: Jamie Calder [mailto:JCalder3@cfl.rr.com]
> Sent: Tuesday, March 18, 2008 8:08 PM
> To: dakota-truck@dakota-truck.net
> Subject: Re: DML: Fuel Mix Computer
>
>
> Ray,
> It's a '93 318, 30 over, Comp Cam 604 specs:
> http://www.compcams.com/Technical/Search/CamDetails.asp?PartNumber=20-604-8
> 4bbl M1, ported throttle body, FMS 19# injectors, ported heads, MP PCM,
> 1.7:1 RR's...
> Isn't it that cam that causes it to run rich at idle? It use to have a
> couple hi flow cats but they got ruined within 1000 miles.
> I'd like to have it run with the proper air/fuel mix. My brother in NJ
> will
>
> be buying it from me and it will need to have cats installed. Sounds like
> a
>
> piggyback fuel controller is the answer but I'm open to any suggestions.
> Thanks for any help,
> James
>
>
This archive was generated by hypermail 2b29 : Tue Apr 01 2008 - 00:20:40 EDT