MSPNP2 woes - 95 1.8 turbo
#1
MSPNP2 woes - 95 1.8 turbo
Long story short... I'm having some rather annoying issues getting my car to idle properly. The WB reading won't get out of the 10AR range regardless of what I try to do, both on the gauge and in TS. Therfore, it's running stupid rich, even after autotune tries to lean out the fuel. The fuel load in the idle range actually went down to 2 and the AFR never left the 10 range
I've set the engine constants to reflect fixed timing at 10-degrees advanced and have set the physical timing as well on the CAS/pulley. All the proper IAT values have been applied. The wideband settings in the 'AFR' calibration have been set properly as well. The only values that are obviously concerning to me are the injector downtimes, which are currently set at 10.00... But are supposed to be way lower as per the flowforce instructions. When I input the values listed on their website, the car won't start at all.
I pulled the spark plugs to see if they were firing and found them all to be black. I changed them all to NGK Iridium in the 7 heat range and replaced my plug wires while I was at it. There is spark coming out of the coil on all four cylinders.
MSPNP2 1.2 revision board w/ GM IAT (spliced into the oem MAF harness) and DIY EBC (wired correctly)
Deleted EGR (capped intake manifold top port only)
Flowforce injectors (610cc) w/pnp harness (reqfuel set at 5.0)
Turbonetics T3 60-trim
Tial 38mm MVS WG
EL top mount manifold
3" DP w/ AEM UEGO WB (spliced into the oem o2 ecu wire)
I'll upload my tune and log this evening.
I'm at a total loss folks. Any help would be greatly appreciated!!!
I've set the engine constants to reflect fixed timing at 10-degrees advanced and have set the physical timing as well on the CAS/pulley. All the proper IAT values have been applied. The wideband settings in the 'AFR' calibration have been set properly as well. The only values that are obviously concerning to me are the injector downtimes, which are currently set at 10.00... But are supposed to be way lower as per the flowforce instructions. When I input the values listed on their website, the car won't start at all.
I pulled the spark plugs to see if they were firing and found them all to be black. I changed them all to NGK Iridium in the 7 heat range and replaced my plug wires while I was at it. There is spark coming out of the coil on all four cylinders.
MSPNP2 1.2 revision board w/ GM IAT (spliced into the oem MAF harness) and DIY EBC (wired correctly)
Deleted EGR (capped intake manifold top port only)
Flowforce injectors (610cc) w/pnp harness (reqfuel set at 5.0)
Turbonetics T3 60-trim
Tial 38mm MVS WG
EL top mount manifold
3" DP w/ AEM UEGO WB (spliced into the oem o2 ecu wire)
I'll upload my tune and log this evening.
I'm at a total loss folks. Any help would be greatly appreciated!!!
Last edited by impulsive.ca; 06-19-2015 at 12:00 PM.
#10
Well that would explain it. I'll set that to 1.0ms and see if it works out. Except I know the deadtime and battery corrections provided by flowforce don't work at all... It just cranks till it can't anymore.
I'm a noob at tuning, so I'm sorry for asking stupid questions. With that said, they're only stupid if you know the answers
I'm a noob at tuning, so I'm sorry for asking stupid questions. With that said, they're only stupid if you know the answers
Last edited by impulsive.ca; 06-19-2015 at 01:15 PM.
#13
Supporting Vendor
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MSPNP2 woes - 95 1.8 turbo
Injector wise, make sure the contacts on the harness side are clean. After 20 years you can get a bit of corrosion which can cause problems.
Others have had success with the listed dead times, so I don't think that is the problem.
Others have had success with the listed dead times, so I don't think that is the problem.
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#16
Tweaking Enginerd
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Dude, if you keep poking the Brain bear, you are gunna have a bad time.
With those specified flow numbers and dead time your idle on-time (including DT) should be ~1.5-1.9 msec (didn't run calcs, they are easy to find). At a DT of 2.5msec a VE of 1% will deliver something like 80% more fuel than needed.
With those specified flow numbers and dead time your idle on-time (including DT) should be ~1.5-1.9 msec (didn't run calcs, they are easy to find). At a DT of 2.5msec a VE of 1% will deliver something like 80% more fuel than needed.
#17
Boost Czar
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if you dont have enough fuel to idle, then changing your deadtimes to increase fuel over fixing your fuel map isnt going to solve the problem with your fuel map being bad.
youre solving one problem by creating another.
fix your fuel map.
if you dont have enough fuel ADD FUEL IN YOUR FUEL MAP.
fuel map
fuel map
the fuel map is fucked
have you picked up on the issue yet?
fuel map
map of fuel needs more.
what else do you want me to do? fly over, plug in my laptop, open your fuel map, and fix it for you?
here's something incredibly helpful: with your injectors and PROPER deadtimes and req_fuel value, your idle cells should be in the 60-70% zone. if they are in the 30-40%VE area, that's why you have to double the deadtime in order to idle...
#18
Tweaking Enginerd
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the no-start below 2.5 can be due to several other issues that are masked when using a DT of higher than 2.5. Specifically, if your priming pulse/priming pulse delay or cranking pulse values are jacked then the DT of 2.5 could be "fixing" these issues. You need to view the start cycle as multiple separate events.
Search the forum, find a basemap, look at the priming/cranking settings, and match them.
Search the forum, find a basemap, look at the priming/cranking settings, and match them.
#19
its very helpful.
if you dont have enough fuel to idle, then changing your deadtimes to increase fuel over fixing your fuel map isnt going to solve the problem with your fuel map being bad.
youre solving one problem by creating another.
fix your fuel map.
if you dont have enough fuel ADD FUEL IN YOUR FUEL MAP.
fuel map
fuel map
the fuel map is fucked
have you picked up on the issue yet?
fuel map
map of fuel needs more.
what else do you want me to do? fly over, plug in my laptop, open your fuel map, and fix it for you?
here's something incredibly helpful: with your injectors and PROPER deadtimes and req_fuel value, your idle cells should be in the 60-70% zone. if they are in the 30-40%VE area, that's why you have to double the deadtime in order to idle...
if you dont have enough fuel to idle, then changing your deadtimes to increase fuel over fixing your fuel map isnt going to solve the problem with your fuel map being bad.
youre solving one problem by creating another.
fix your fuel map.
if you dont have enough fuel ADD FUEL IN YOUR FUEL MAP.
fuel map
fuel map
the fuel map is fucked
have you picked up on the issue yet?
fuel map
map of fuel needs more.
what else do you want me to do? fly over, plug in my laptop, open your fuel map, and fix it for you?
here's something incredibly helpful: with your injectors and PROPER deadtimes and req_fuel value, your idle cells should be in the 60-70% zone. if they are in the 30-40%VE area, that's why you have to double the deadtime in order to idle...
With that said, I'll re-verify the idle fuel map and bring up the values and use the proper dead times and voltage corrections.
Last edited by impulsive.ca; 06-21-2015 at 02:21 PM.