SHO Shop lpm

[whiteman_01]

I recently aquired a sho shop lpm. It has a ribbon cable on it that goes into the ecu. Which way am i supposed to put it in? I plugged it in with the board hanging down and when i turned the key on the fan turned on, and the fuel pump kept running. I didnt try to start the car as i thought i may have had it in backwards.

When i got the lpm it had a broken resistor on it. I just went to radio shack and got a new one (matching stripes) ans soldered it on. Mabey the lpm is no good?

 

[Lupo]

I recently aquired a sho shop lpm. It has a ribbon cable on it that goes into the ecu. Which way am i supposed to put it in? I plugged it in with the board hanging down and when i turned the key on the fan turned on, and the fuel pump kept running. I didnt try to start the car as i thought i may have had it in backwards.

When i got the lpm it had a broken resistor on it. I just went to radio shack and got a new one (matching stripes) ans soldered it on. Mabey the lpm is no good?

You tried plugging in the LPM both ways? You can try to start the car with the LPM backwards, as the car will just crank, and not start.There is no way of knowing what tune you actually have until you read the LPM with the LPM software.
Also, the second version of the LPMs that were produced were ECU specific, and only work in the ECU that they were programmed for.
An LPM programmed for a B9B would not work on an X2J for example.

 

[Eric VerValin]

I remember it being funny when I first put mine one. It should be "pointed down", and it definatellly has to be for the right ECU like Lupo said. Just make sure to disconnect the ground on the computer, (under hood single pin connector), because if you do it "just wrong" instead of "just right" you can smoke that ECU in a second. Done it before years ago... same senario... except I pulled the chip out, and the fan was still on.. XJ2's are pretty easy to find tho..

Kinda sounds like it just might not have a very good connection. If I were you.. I'd pull the ECU out completely, and clean off the connector where it plugs in really good. They really coat that thing with grease from the factory. Good luck... you'll love it when it works..

 

[whiteman_01]

The lpm says on it that it is for an x2j stock tune. I will give cleaning the contacts a try this weekend and plug it in again to see what happens. For the record, i only tried to plug it in one way, as i didn't want to fry the computer.

 

[hawkeye18]

Definitely clean the connector. It comes from the factory with this sticky, nasty goop that absolutely will not transmit a signal. You need to get up in there with Q-tips and alcohol and clean the crap out of it. Run some alcohol thorugh the LPM as well.

 

[SeanMc]

Blow in it...Nintendo style :theyareontome:

 

[AREA 91]

Blow in it...Nintendo style :theyareontome:

 

[whiteman_01]

:thankyou:

 

[rocket455]

did it work? your car running?

 

[Eric VerValin]

I wish I could remember how the older styles plugged in... I know the top of mine is flush with the top of the computer. (if that makes sence) But I want to say I think the older ones were upside down looking .. but don't quote me on that... Anyone here remember? Or still have one?

 

[kmetros]

Just throw it in the trash. Those things are useless. Don't believe me? Do a timed run from 20mph to 60mph in 2nd gear with and without the LPM. Do four of them with and four without. Drive down a straight road and time it, then turn around and do it again over the same stretch of road to account for elevation changes in the road. Average the four run times. I can almost guarantee that your car will run slower with it than without it. Even if it is 'faster' it won't be by much to offset the likely drivability issues you'll experience with the thing.

 

[Eric VerValin]

Yea, I don't beleive you.. I can hear the difference, and feel it. maybe thats just the newer style.. but without it, and with my MAF... it won't even keep an idle without mine... you gotta stop smokin that stuff man... That boost is getting to your head.

In a few months I plan on getting mine dyno'd, and I wanted to get a baseline without my MAF, and LPM.. too big of a pain to remove the UDP's (4).. but we will see when the time comes...

 

[92sho16]

Yea, I don't beleive you.. I can hear the difference, and feel it. maybe thats just the newer style.. but without it, and with my MAF... it won't even keep an idle without mine... you gotta stop smokin that stuff man... That boost is getting to your head.

In a few months I plan on getting mine dyno'd, and I wanted to get a baseline without my MAF, and LPM.. too big of a pain to remove the UDP's (4).. but we will see when the time comes...

Is yours a sho shop one? i think he is refering to those made by sho shop, i remember reading many bad things about the tuning that sho shop did.

 

[whiteman_01]

I plan on trying it out again over my weekend. So i should get to it thursday, but only if i get the pan gasket done on the 91.

 

[Eric VerValin]

Well, I think so... IIRC, I had an older "ribbon" style at first, and I can't remember what it was, but I had an issue with it, and when I got another replacement, it was the newer "flashable" one. Ted B programmed both of them... I just can't remember if it was from him or not. Coulda been Cincysho even.. can't really remember.. many many moon's ago..

 

[bobreimer]

There is a lot of chatter about how bad the tune is with an LPM.

I'm running a SHO Shop LPM with a 9 lb vortech. Its their old kit before they went out of business. I've run this setup for a few years with no problems. The car is reliable and fun.

The tune is not perfect. It goes rich at 6,200 and the engine falls down. I probably have another 30-40 horsepower with a better tune, but I just don't want to learn how to use the Tweecer, or spend the money.

Why? Well, for all practical purposes I have more than enough power for a FWD. It breaks traction in second when I get into the boost and just about changes lanes sometimes. So, I can't really use more power on the street. I no longer autocross the car, but it is a great highway vehicle and still gets decent mileage.

 

[Lupo]

Just throw it in the trash. Those things are useless. Don't believe me? Do a timed run from 20mph to 60mph in 2nd gear with and without the LPM. Do four of them with and four without. Drive down a straight road and time it, then turn around and do it again over the same stretch of road to account for elevation changes in the road. Average the four run times. I can almost guarantee that your car will run slower with it than without it. Even if it is 'faster' it won't be by much to offset the likely drivability issues you'll experience with the thing.

That's not true. The LPM is just like any other tuning device. It simply overrides the ECU calibrations. Now what make a difference is the calibrations that the software has the ability to change. In this case, the LPM software was fairly limited in what it could actually change, but it did have some parameters that nobody else had.
That being said, the LPM still should be tuned for the car, and simply plugging in an already programmed LPM and hoping it makes things better is a weak prospect at best.
Most of why Vadim's SC tunes were bad was because he was limited to what he could change. He didn't have the ability to change the MAF function, or the cranking pulsewidth, or the adaptive tables, or a whole host of other cool parameters that tweecer now has, and that greatly improves driveability on SC cars.
An LPM can still make a much better tune than stock for most NA cars if it is tuned for them, aside from the ability to change the standard scalars like idle, IRC opening..etc.

 

[kmetros]

Yea, I don't beleive you.. I can hear the difference, and feel it.

You've been listening to NIN too loud. That our you're ears are wired directly to your ass and you think that because it's louder it's faster. Seriously, try it. I bet it's no faster. Put it on a dyno too. If it is slightly faster, you may be surprised at what the A/F ratio looks like. The extra .2 seconds of speed you're getting on your 20-60 runs may be causing harm to your engine. I'm not speaking from what I've read on this board but from my own personal experience.

 

[kmetros]

That being said, the LPM still should be tuned for the car, and simply plugging in an already programmed LPM and hoping it makes things better is a weak prospect at best.

That's exactly my point. Only those that lived in CA near Vadim have LPM's tuned for their cars. The rest got standardized tunes that didn't work on the vast majority of the cars they were installed on. So, I guess we're both right and we're both wrong.

 

[Eric VerValin]

Well.. I'm not sayin you don't know what your talkin about.. but back in the day, I was in pretty good contact with Ted, and I know mine was specifically tuned for my car.. I had 3 chips at one time.. and there was definately a difference...

I have a 73mm which is a big part of it, plus I swapped both tubes, had it pass an Emissions test with both tubes, which I thought was odd, but whatever... udps, a SHO shop Y... and I know it was tuned for mine... not just a 'standard' tune... he did customise it to mine.. and I kinda worry now, about adding anything, in fear of throwing off the tune. Even BBB's scare me to an extent.... I have had this SHO for almost 10 years now.. and drove a 91 before that... I know what a stock SHO sounds like, and drives like.. and I can tell ya.. it does make a difference... I know part of it is the fact that the secondaries open a bit sooner than before, and it raised my idle a hair due to the UDP's, so I don't have 'strobing' headlights at idle... and from what he told me, I have a bit more of a rich mixture just off idle...

thats all from memory... haven't talk to him in a long time.... just telling ya what I know.. If I add NO2 someday.. I fear I'll have to get it retuned, or like you said... trash it..