Brian Felts

Hey I had e-mailed split second for their conversion to a late model MAF for my L jet 84 (us spec) they want $755 for the conversion. Is there another company to resource to? This price is quite excessive for a conversion even for a Porsche. I don't really need it but I can see how it would flow quite a bit better than the bard door model.


Thanks
Brian Felts

Fabio421

755? That sounds higher than it used to be. It was $339 for the PSC-009. Is that just the translation box? What is included in that price? I have some experience using this system and I highly reccomend you pay for data logging capabilities.

Brian Felts

You know they didn't say what it included but WOW. I don't want to discoutn in any way the amout of R&D they put in to it because I am sure they work their butts off.......BUT WOW!!

Brian

Fabio421

Is that a kit that includes the MAF? If so, that may be why? They also have two versions of the system, one is laptop programmable and the other has a little adjustment box with dials. The dials are supposed to be easier to operate but maybe more expensive. The one I have used is the laptop programable unit, the PSC-009. It seems to work well. I would just be sure to spend the extra money in order to get all the data log stuff with your wideband. Otherwise it will take forever to tune. You will have to either do alot of high speed runs with a passenger who is able to watch the wideband as well as the laptop while making notes as to which cells need to be adjusted and by how much. Its difficult to do. It may be easier if you have a dyno to load it up. I didn't have that option.

Find out what is included in that price. The MAF can be bought at a junk yard if you are trying to do this on the cheap.

mark kibort

I had huntley racing do a full system for me, but they forgot one thing, the 84 Ljet was a 4 to 9 volt system and they assumed it was like the 944 style which is a 0-5 volt system. I had a special adapeter machined to fit in to the "U" and then bolt to a euro air box filter box. I still have those machined parts.
The problem was , it didnt work.

If it is a turn key product, how do they address the air box, and have they really made the fuel mixture box that will replace the AFM with the mustang style MAF?

755 is a good deal for such a mod. I was up to $1000 when i aborted the project with my part euro 5 liter racer. would have been very cool though!

If it works, we would do Scots racer next!

mk

Fabio421

It's not a bolt in kit made for a 928. This wasn't an issue on the car I am speaking of because all of the induction was a custom setup. What about your system didn't work Mark?

Airflite40

755? quit whining!!! I paid $1100 for my MAF conversion for my 951...

:flamesuitengaged:

mark kibort

As i mentioned, the system (split second) was the entirely wrong voltage. the signal to the computer was wrong! so, nothing worked. had the voltage been correct out of the split second to the Ljet computer, then it would have been fine. again, it was the 0-5volt model, while the Ljet flappy system creates a 4 to 9 volt signal to the Jjet box.

with the adapter and the euro air box, it went together like it was a euro 85. But, one small issue, it wouldnt run! so i sent it all back, got a bunch of appologies and and kepted the stuff they had to made to make it work with my Ljet system

mk

Fabio421

They have worked out that detail but you have to tell them you need the HV version when you order it from them.

mark kibort

HV version?? does this mean high voltage?
If that has been worked out, this should be a very cool kit and mod.
just think, you remove the 1.5x2" restrictor plate off the US 84s and go to a 3 or 3.5" opening!
I would think, if the mixtures can be kept in line, and response is good, it should be worth about 10-15rwhp.

someone needs to do it !!

MK

Fabio421

I'm telling you, it has been done. At least twice. Once on an 84 that is here in FL. I helped to tune it but it isn't n/a its a TT 4.7 L.

mark kibort

we need to see a NA version test result. what would a TT tell us anyway?
good idea, but you can just turn up the boost ever so slightly to make up for this kind of (restrictor plate) intake restriction.

mk

Fabio421

The MAF conversion was done to improve the ability to tune the fueling. The reduction in restriction was an added benefit but I don't think it was the primary reason behind the conversion. I believe there is already a thread regarding the added benefits of the split second box on a 16v car here on Rennlist. I will see if I can find it.

mark kibort

it would be good to see any NA car that has been done. so far, i dont think there has been any. If the TT was done, that means the NA would be an easier mod. we are talking about only matching the US Ljet fuel deliver, plus about 3 to 5% more. the euro and 5 liter is about 100hp more improvement over stock 4.7. pretty amazing, since they said (probst book) that the Ljet cant do it! the ONLY mod i did over that 100hp change was a fuel regulator to change engine management. Ljet is good stuff, but its a little restrictive with the small opening. Scot's at 290rwhp rigth now with a stock Ljet. i would think that his set up could yeild 310ish with the MAF conversion. Heck, right now, im only at 298rwhp. (could have been a dyno strap down issue, or maybe the old holbert car is getting tired)

mk