V8 EFI

Looks to me he is using a OMVL R90 vaporizer, i'm not sure if this will gonna work. The OMVL is suppost to be working with a vacuum while a normal lpg system (injectors and ecu) work with a 1 bar vapour injection. Something like a Tomasetto would be a better choice i think.

Hi there, Did you find what you were looking for ?. Out of curiosity, as i'm running the same engine, what kind of mapping do you use know ?.

I've bought it secondhand by a Webasto dealer, about 300 Euro for a complete and refurbished unit including remote controle and timer. Its a thermotop E supposed to be for small cars, this might be the reason why its cheep but it is working ok!. Why ?. mm the V8 does warmup pretty fast so its not really necessary but its was cheep and fun to install. I'm driving on lpg and i can now switch it over from petrol to lpg a bit sooner. And yes on cold mornings is it nice to start in a warm car

Because i hate those unanswered questions i answer my own question. Maybe even i can help some one else too The return pipe on the side of the fueltank does go to the bottom of the tank, Its working perfectly !.

Thanks, its running now I've messed around with the PWM settings and found out the Valtek wont open under 2.8 ish and 30%. Its running horrible rich so i've lowered down the required fuel from 20 to 12 !. Its switching over between petrol and lpg with out any hesitation . It wont start on lpg but i guess they never do. I probably will have to tune it all over again for petrol and lpg as well, maybe petrol wont be that different its just that i've changed the pwm threshold and openings time. What is the difference between openings time and pwm time ?. Is it correct to think that pwm time is a period of time needed to open the injector (the peak before hold) while the injector opening time is a software value to compensate the openings time in relation to the VE and other bins ? I've started with a 2.5 ms for both and ended up (so far) with an openings time of 2.5 ms and a pwm time of 3 ms. Do they both need to be the same ?. Thanks.

You do have a point there. However there might be a slight problem. The Valtek injector openingstime is about 3 ms while the petrol injector is a lot shorter (1 ms) Switching between them will fry the petrol injectors i guess ?. so there is no way i can put a bigger number in then 1 ms. Is there away to avoid this ?.

Thanks for replying, it gives me hope again So if i understand it right i'm lucky to have low ohm petrol injectors as well ?. Would it be possible to find a kind of setting wich would be good for both ? because i cant change PWM when switching fuelmaps. I am considering to buy a 6 ohm injector to replace the 3 ohm injector, would this be better or just a wasted of money (i've already bought the 3 ohm types) ?. Frederik.

Hello squirters, Its quite amazing, today there is so much information about megasquirt. There must be at least thousands of users !. I've megasquirted my range rover 3.5 (ms1,v3 msns extra, 29v). Its running good on petrol now, ignition is also working fine. So its time to swap to lpg and this is where the trouble starts.........or maybe not? I've mounted some Valtek LPG vapour injectors wich are 3 ohm each. They are banked the same way as the petrol injectors and they will be fed with a relay to switch over from petrol to lpg. The petrol injectors are low ohm type injectors and are fed in combination with a RRC resistor. I've tried to controle the Valtek injectors in combination with a RRC resistor as well to limit the current but that does'nt work. The Valtek injectors are 12 volt will problably not work with a lower voltage so pwm its not a option ?. I've seen a injectorboard from jb perf.com and have mailed them, but this board does'nt work well with this kind of injectors. I've contacted Valtek Italy for a different kind of coil, they dont have the 6 ohm types anymore but Bigas does. Do you think 6 ohm lpg injectors will work with the same settings as the petrol injectors (pwm current limit 100%, 25 ms) ? and will the megasquit handle the current ?. Are there other modifications needed for my megasquirt ? maybe extra earth wiring inside the megasquirt ?. Does anyone have experience with this type of injectors and how to controle them ?. Thanks Frederik.

I'm in the middle of a lpg conversion and needed to get rit of the lpg hose (temporary). So i pushed the end of it it between firewall and gas throttle / kickdown lever to get it out of the way. I'm still not sure what happend, i guess this action caused the kickdown cable to get tight or stuck ?. I followed scube's advice, turned the throttle lever a view times by hand to check if cable was broken and tried again and it works again. To be honest i dont know, my autobox is shifting pretty good, although it does make a lot of noise when cold (caused by thick oil ?)

Turned out to be the kickdown cable. Once again THANKS Frederik.

I've checked the oil level right after a few attemps to drive (so i'm not sure if its correct because of all the reving), its seems to be ok. Might check that one again on a cold engine with the autobox in neutral. There is absolutely no movement at all, not even in 1 or in reverse allthough i can hear the drivechain 'cloncking' not as loud as normaly but still.. Will check the kickdowncable to morrow. I dont know what it would do if broken but check it anyway. The zf4 from 1988 is all mechanical is'nt it?, there is no extra solenoid valve blocking some oil chanel ? Thanks for replying, Frederik.

Hi all, I've got a problem, my range rover autobox wont shift in gear, its like trying to drive with the foot on the brakes. It does buildup some pressure and it wont rev up easely in any gear but doesnt move at all. The wheels are freely spinning in N when jacked up and they are blocked in P. So i guess its not the parking pawl ?. I've had some difficulties in the past with starting in P, i had to pull the lever all the way forwards before it would start. Right know the car will start in P so it cant be the inhibitor switch right?. Does the switch (if its broken down) block the autobox some how ?. All idears are welkom, i do need the car for work. Thanks, Frederik.

Hello, I've resently bought a used Webasto parking heater for my 1988 3.5 V8 Classic. I've googled around and found some instructions, according to the Webasto manual i should connect a T-pipe to the fuel return pipe nearby the tank. Would this work for my car, just slice in a T piece in de return pipe near to the tank ?. Is the return pipe in the tank itself long enough to reach the bottom of the tank ?. And is it hard to get to the tank (fuelpump connections) ?. Does anyone have some ideas ?. Thanks again, Frederik. (Could'nt find anything with the search button, there are a lot of Webasto diesels though )

Thanks for the replies, they are quit usefull !. I'm looking for something not to expensive and a bit robust. I'm afraid the panasonic is way to expensive for me for this application. I've found three items suitable for me so far. 1) Fujitsu LT-C 500; seems to have a serial connector and 10.5 inch bright indoor / outdoor sreen, its light and in combination with a small docking station a lot of extra connections (USB ethernet etc). Windows XP 2) Archos 9; Good looking, 9 inch screen, windows 7 based, kind of slow. 3) Samsung Q1-EX 71G; Also good looking, its got a camera not very important though. 7 inch touchscreen. It runs a tablet version of windows dont know if thats nogood for programs like tunerstudio ?. Also a bit slow. For now i think the Fujitsu might be a good solution, agree ? Does anyone have bad experience with one of these ?. Thanks. And not to forget, they have also a pen for the touchscreen, specialy for my fatty fingers

Hello, This morning my laptop crashed, its pretty annoying because i still have a lot of tuning to do (and without its like riding in the dark) Its probably asked many times before but there mightbe some new ideas rightnow. I'm thinking of buying a pc tablet, do you guys have any experience with this kind of pc's and what would you suggest ?. Maybe this is not the right place to ask, in that case does anyone know a site which is ?. Thanks, Frederik.