Hot Wire MAF conversion for L-Jet
#1
Man of many SIGs
Rennlist Member
Rennlist Member
Thread Starter
Hot Wire MAF conversion for L-Jet
There has been some interest in this so I'm posting it for everyones benefit. It works, I've used it.
www.splitsec.com
PSC1-009
Pro. Sig. Cal. AFM to MAF HV Output
$373
The HV stands for high voltage output. This will work with the 928 L-Jet cars. I believe it was originally developed due to some prodding from John K. He has installed it on a couple of cars now. I helped do the fuel tuning on one of them. The drawback to this system IMHO is that it isn't able to be programmed in real time. You have to shut everything down and make your changes then try again to see your results. The car I was working with didn't have data logging either so it made it very difficult to identify individual cells that needed attention and plot them on a paper chart while riding down the road. It would be alot easier to do if you spring for the data logging option.
www.splitsec.com
PSC1-009
Pro. Sig. Cal. AFM to MAF HV Output
$373
The HV stands for high voltage output. This will work with the 928 L-Jet cars. I believe it was originally developed due to some prodding from John K. He has installed it on a couple of cars now. I helped do the fuel tuning on one of them. The drawback to this system IMHO is that it isn't able to be programmed in real time. You have to shut everything down and make your changes then try again to see your results. The car I was working with didn't have data logging either so it made it very difficult to identify individual cells that needed attention and plot them on a paper chart while riding down the road. It would be alot easier to do if you spring for the data logging option.
#6
Man of many SIGs
Rennlist Member
Rennlist Member
Thread Starter
Plan on spending at least a few hours with the fuel mapping and then you would probably want to come back and fine tune it in different conditions. Yours being a race car and operating in a narow rpm band I would think it would be easier to tune than a street car. But I could be wrong since I have never tuned a race car.
#7
Rennlist Member
not for me, but for the car i built up with Scot which is a Ljet. He is at a disadvantage feeding that 5 liter with that little 4 square inch AFM opening.
I think it would come to life with a MAF on it.
Mk
I think it would come to life with a MAF on it.
Mk
Plan on spending at least a few hours with the fuel mapping and then you would probably want to come back and fine tune it in different conditions. Yours being a race car and operating in a narow rpm band I would think it would be easier to tune than a street car. But I could be wrong since I have never tuned a race car.
Trending Topics
#9
Rennlist Sponsor
Rennlist
Site Sponsor
Rennlist
Site Sponsor
I put together an L-Jet to LH kit for one of the guys here. I need to check in with him and get some feedback. Last I heard the the physical install was a simple replacement with the parts I sent. I don't think he has finished with the tuning side of it yet.
__________________
David Roberts
2010 Jaguar XKR Coupe - 510HP Stock - Liquid Silver Metallic
928 Owners Club Co-Founder
Rennlist 928 Forum Main Sponsor
www.928gt.com
928 Specialists on Facebook - 928Specialists
Sharks in the Mountains on Facebook - 928SITM
David Roberts
2010 Jaguar XKR Coupe - 510HP Stock - Liquid Silver Metallic
928 Owners Club Co-Founder
Rennlist 928 Forum Main Sponsor
www.928gt.com
928 Specialists on Facebook - 928Specialists
Sharks in the Mountains on Facebook - 928SITM
#10
The SMT-6 will do the same thing and more than the PSC1-009, for basically the same cost. (Maybe $15 more based on a quick search just now) Neither of those include the cost of the MAF, and you'd have to come up with the adapter to put in the MAF and get rid of the AFM.
For less than just the cost of either the PSC1-009 or SMT-6 alone, without the cost of the MAF that you'd need along with them, you could go to a MAP sensor with a Megasquirt, which would also give you the option to add ignition control too if you wanted to. If for some reason you really wanted to go with a MAF rather than a MAP sensor, you could still use the Megasquirt and come out with a lot better setup, and for less money.
For less than just the cost of either the PSC1-009 or SMT-6 alone, without the cost of the MAF that you'd need along with them, you could go to a MAP sensor with a Megasquirt, which would also give you the option to add ignition control too if you wanted to. If for some reason you really wanted to go with a MAF rather than a MAP sensor, you could still use the Megasquirt and come out with a lot better setup, and for less money.
#11
Rennlist Sponsor
Rennlist
Site Sponsor
Rennlist
Site Sponsor
You are correct Dave. It is physically an easy install. I have the fuel mapped to about the 3500 RPM range. Hopefully, I will find some time soon to tune it to redline, and then my plan is to fine tune it on the dyno under different loads. I will start a new thread when I have that complete.
Great to hear from you, I assumed you have been busy, I can relate!!
Looking forward to hear more of your results!
#12
Rennlist Sponsor
Rennlist
Site Sponsor
Rennlist
Site Sponsor
#14
Rennlist Sponsor
Rennlist
Site Sponsor
Rennlist
Site Sponsor
Jack,
Thanks again for all your hard work taking the "lead" and being the GP for this project! I look forward to talking with you next week. Since you and I started this "project" this past spring you can obviously tell I haven't been rushing you.... like Tony now is :-)
Tony, PM replied.
Thanks again for all your hard work taking the "lead" and being the GP for this project! I look forward to talking with you next week. Since you and I started this "project" this past spring you can obviously tell I haven't been rushing you.... like Tony now is :-)
Tony, PM replied.