Hi, I am from Sweden, I bought a 1992 Nissan Pulsar GTI-R from Holland, the car is mint. I got one problem with the car, and this problem is making me not pass the car inspection, the emission values are not good enough. I have a HALTECH PS1000 ECU, with a AEM wideband digital display so that I can see the AFR. AFR is at 14.7.
My problem is that the car missfires every 5-10sec all the time. I have replaced leads, sparkplugs, oil, filter, fuel injectors, FPR, catalytic converter, the car has been properly mapped in a rototest, the engine idles steady at 1000rpm, no MAF, using the haltech MAP sensor. No vacum leaks found.
The workshop that mapped the car guesses the cams are to "sharp" to much lift.
I have a couple of videos, if anyone just could listen and tell me, "you got high lift cams". I need to know if have to swap into OEM cams. I am stuck, dont got anymore ideas. The preowner said that the only mods they done are following, head gasket, cams, FMIC, racetech ECU (wich I swapped into HALTECH because it was an old ECU).
1. http://sv.tinypic.com/player.php?v=353626t&s=8#.U7RO97FqG70
2. http://sv.tinypic.com/player.php?v=ju73py&s=8#.U7RPFrFqG70
http://i61.tinypic.com/24cuyk0.jpg
http://i58.tinypic.com/9h2hb8.jpg
you could remove the valve cover and measure the cams with a mic. (See photo). Or you could measure just the lift, which I beleive is 10.0mm.
If its anything more than you will of course know the cams are bigger.
Since you do have a programmable ecu you could try and detune the car way back for emissions then of course switch back once you pass :)
Hi, thanks for answering , I know people running SR20w with 272 cams that pass the inspection, and when you got 272 cams or above, you have a rough idle, My engine does not even run rough on idle. The ECU is tuned in for car inspection. The misfiring is the problem, because a misfire is sending out unburnt fuel & air.
was the car in timing mode when you attached the first photo of the timing marks?
if it was your car should be running at 20 degrees below top dead center, which is the furthest mark on the right. (looks like your is currently at 5 degrees above top dead center)
may be a good idea to check the mechanical timing of the cams as well, make sure the chain hasnt skipped or anything.
does the ecu throw any codes?
oh sorry, wrong picture, the first one is correct, the second picture is wrong, the second picture should be at the next marking on the crank.
Hi mate,the problem is not in the cams. the problem is in the CAS disc. STD nissan CAS disc has 360 slots, and that is too much for the HALTECH ECU . You have to switch to a AEM GTIR CAS DISC. I have the same ECU and had the same issue. Switched to the AEM disc and problem solved. I have one spare if you need it. I am located in ITaly
I just placed an order on a AEM disc from the U.S. I hope you are right, I will kiss you if it works :-)
You will have to change the settings on the ecu ans set base timing again.
then it will work.
How should I mount the cas disc, heard it should be fitted in a special kind of angle....
My Pulsar has a mild idle thats not normal. I pulled the valve cover and found these... Had no idea the engine came with them till I pull the cover. Tomei cams and gears. Its fun to drive for sure!
[URL=http://s158.photobucket.com/user/rockinrobin_5/media/Pulsar%20gtir/IMG_4741_zps8c54b2f3.jpg.html][IMG]http://i158.photobucket.com/albums/t115/rockinrobin_5/Pulsar%20gtir/IMG_4741_zps8c54b2f3.jpg[/IMG][/URL]
[URL=http://s158.photobucket.com/user/rockinrobin_5/media/Pulsar%20gtir/IMG_4740_zps89f21a33.jpg.html][IMG]http://i158.photobucket.com/albums/t115/rockinrobin_5/Pulsar%20gtir/IMG_4740_zps89f21a33.jpg[/IMG][/URL]
[URL=http://s158.photobucket.com/user/rockinrobin_5/media/Pulsar%20gtir/IMG_4745_zps73a79b77.jpg.html][IMG]http://i158.photobucket.com/albums/t115/rockinrobin_5/Pulsar%20gtir/IMG_4745_zps73a79b77.jpg[/IMG][/URL]
91 GTIR
98 Legacy GT
96 JDM Legacy GT-B
66 Volvo 122 (w/nissan ka24de)
94 Toyota truck
The CAS has a D shaft so you can only install the disc in one way.
Please note this will completely upset the ignition timing so you will have to lock timing in the ecu and adjust accordingly....
Those cam lobes are a bit scored....
After I installed it, is it safe for me to ride my car to the workshop who are going to set the basetiming map?
Assuming you can start your engine.honestly I don t think it will start...
Okey, then I will change it at the workshop.
I have swithced the CAS disc to a AEM 54 OD , and setting up a new base timing map at my local tuner shop dealer. He claimed the car does not misfire anymore, the disc is installed but it was not the problem, something with the EMS signal from the CAS was not recived properly and he switched "chanal" or something, and now its working. The car still misfires at idle, I have to high CO2 emissions, I called the idiot tuner shop today, but they did not answer, he took 165$ to set a new base map timing, the worst part is the car did not even get any better.
Something I forgot to tell is that he metioned that the car has high amount of powerloss at high RPM´s, he said that there could be many components.
I know for sure that the AEM disc is required to avoid misfires at high rpm.
Are you able to use the Haltech software?Can you send me the map?I will have a look at it for you.
I also need to know everything about your mods,injectors etc
David
Hi, I will upload the map tomorrow, tried to upload it now to you, the idiot has password protectet the map, so I got to call the son of a bitch tomorrow and get the password.
What iniectors are you using?Are you running a widrband?what ignition coil are you using?
Stock 444 injectors, yes i have a aem wideband sensor wirh afr display, ignition coil is stock.
OKey, so I have talked to the tuner, and he wont give his password, cuz he says his "legacy/tricks" can be find in the map and that there is nothing wrong with the map, he also metioned that people often forget that a car is car, and always blame the mapping. He said that my engine is misfiring because the signal from the cas to ECU is not clean, he tried to filter out the disturbance, worked for a while, I start the car outside his shop I notice its still misfiring, and he claims that it may be a Intermittent fault and that I should start with checking the CAS itself and also the wiring from the CAS to the ECU, he metioned it could be bad ground or oxidated cables.
I don't think he have any right to keep the password to himself, to me it sounds like he have not done anything to the tune and he try to make money on you this way by blocking you access to the mapping. Saying that his 'tricks' may be discovered sounds really fishy to me.
Last resort would be to reset your EMS and go see another tuner who will not block it with a password or that he will give it to you.
well I think it is down to tuner to give you back a fully working car, not a car that is not driveable. Looks like he has no idea on how to solve the issue or on what can cause it.
With the AEM disc the Haltech ECU should work really well. Try to send a mail to haltedch customer support and ask for their help. Hard to help without having a look at the map and the car. This Tuner is a Haltech official tuner?
He says that the deal was to install the haltech ps1000 into my car with some other things and map the car for one working day. I paid him 1300$ just for mapping the car in his dyno. He is a official Haltech tuner, one of the best in sweden when it comes to haltech according the rumors.
He says if he is going to search why the engine misfires, he needs more time and money from me, because his time cost money.
Looks really like he's more about money than a happy customer, if it was me I would harass him until he gives me the password for the ecu. He have to remember that the car is yours and doing that ruin the trust between the tuner and the client just for the sake of some more money. Also someone not used to tune a car would not see what his tricks would be.
Mate this is not tuning cause the car is not running well!
Send Scott at Haltech a mail and ask for his helo.Sorry cannot help you from here.Do you know how to use the software?There is a trigger count and miss counter gauge on the software.What do they show?
Yes indeed, he told to me, that it does not matter if he makes a 100,000$ deal, its all about how much cash he get into his account, he means that margins are importent for him. He said what more do you want from me, " I gave u 20% off on the stock price on the mapping part, I even worked 5 hours extra on your car without taking any extra money from u (I think this parts is bullshit)" He said to me why do you need the password to the map, I said that a friend of mine is helping me with the misfiring on my car and he wants to look at the mapping, he replied with that there is nothing wrong with the map, the AFR values and timing is perfect that he used haltechs basemap for the gtir and modified it with his "tricks", he said that he cant afford anyone look at his work, he described it like this "I take windows xp and make it to Linux". He is a very cocky guy.
Hi there str_motorsport, I will check with haltech, I know how to use the software, I will check tomorrow the trigger count and miss counter gauge. This guy have been in business for 13 years, he tunes all diffrent cars. The only lead he gave me was to start with the harness to the CAS, because the signal is fuzzy he claims, and that he filtered it as I described earlier but it did not help. Another thing is the car smells gas when I am crusing, I did not pass my inspection yesterday, CO levels where 2.2% and maximum are 0,5% at idle. Hydrocarbon levels where also to high, maximum are 100, I had pending from 70 to 200. My catalytic converter is new.
This guy is a fucking idiot, I hate him and I am thinking of leaving the car to another workshop which I spoke to over the phone, they told me that misfiring on idle is always linked to something with the ignition cuz the car is not even under load.