I'm new to this site and am looking for a few opinions. My truck has a Procharger D1SC with a 3" rr pulley making only 9psi. of boost, probably because of the headers and 6500' of elevation here in Wy. Anyways, I'm wanting to upgrade to a Lightning MAF and 42# injectors before going to a tuner in the Salt lake city area. I already changed out the fuel pump to a Walboro 255 lph unit as the inline pump in the Procharger kit was extremely noisy. The truck runs strong but sometimes I can hear a hint of detonation and am currently relying on an fmu for fuel enrichment, sometimes I see 85lbs. of fuel pressure at full boost, other times only 70, so the inconsistancy makes me want to tune Via computer instead of the fmu. Can a tune be made into a handheld programmer for the 42# injectors and upgraded maf good enough to get me to a dyno that's about 180 miles away if I stay out of boost. The nearest dyno facility I can think of is in Salt lake city, the largest nearby town to us. Also any recomendations to a tuner in that area would be very welcome. Hopefully there's enough similar combos out there that can write up a descent temporary tune for me! Anybody know the size of the stock injectors and maf on a 2v 5.4 "non lightning".

 

Just wanted to include my sig but forgot in the origional post.

 

Welcome.
It sounds like you might be able to do email tuning and have good results, though dyno tuning is best. With the larger injectors and maf, the combo is pretty popular and not hard to find a mail order tuner. Try VMP Tuning.
Browse through the tuning forum for more info.

 

Hi,
the stock injectors are 19# injectors and the MAF is (I think) 80mm.

Welcome to the site.

Phil

 

It would be hard to change out the components and then try to get a tune close enough to get you to a dyno. In order to drive it, I'd say it would take at least 2-3 data logging sessions to get you in the range. I tried to do the same thing. I ended up buying and LC1 air fuel meter and doing the email tune. This was to get my initial tune nailed down and now that I'm making changes, I will probably use that again to get me in the ballpark but eventually take it to a dyno tuner.

I don't think your going to be able to do a tune without some extensive work to be able to get to a dyno. It's going to take quite a bit to get you to a safe enough tune to be able to drive it. Without an air fuel meter, your taking a big chance at guessing.....

 

#1: what plugs are you running?

#2: you might want to check the bypass valve for leaks.

- IF you are using a SCT xcal2 or Xcal3. Talk to Mike Troyer @ troyer performance he has a good amount of experience tuning these trucks and he will probably be your best bet for a single email tune. Also Justin @ VMP Tuning He is a good tuner and I have purchased tunes from both. The other option and possibly the most cost effective is for your tuner to email you a tune that will be tweaked when you get there to the dyno.

- The plugs, injectors and MAf aren't hard to change I'd drive it salt lake then change them in the p-lot of the shop your going to have it tuned at.

 

im dont know to much about this stuff but could you not install those at your tuners shop? just go down for a couple days work on it one day and dyno it the next. im sure the tuner would let you borrow his tools to work on your truck.

 

I changed to motorcraft non platinum and 1 heat range cooler than stock gapped @ .035"

I've completely plugged off the bypass hoses in and out of the valve and gained less than a half of a pound. So it's working good as that was my first suspicion when the provided 3.7 pulley only gave me approx. 4-5 lbs.

I will change them at the dyno if I can't figure something out, I just don't want to reek of gas for the rest of the day while I'm out of town, but I certainly will if need be.