na-t GTE ecu project wont boost past 4k
08-10-12, 02:26 PM
#17
gte & na-t
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Are you sure that you have an aristo ecu not a USDM? because it needs the maf sensor which you don't have anymore.
What's part number on your ecu?
if everything is correect , wiring, and your map sensor is not faulty then you must have a USDM ecu that's the only thing i can think of.
What's part number on your ecu?
if everything is correect , wiring, and your map sensor is not faulty then you must have a USDM ecu that's the only thing i can think of.
08-13-12, 08:45 AM
#20
89421-12111, the label is kinda rubbed off but i believe thats it. Also have a 1j sensor looks slightly different
its weird, it seems the map sensor must be good. It drives a **** ton different map sensor unplugged vs plugged in so its obviously reading signal.
which is kinda why im stumped
its weird, it seems the map sensor must be good. It drives a **** ton different map sensor unplugged vs plugged in so its obviously reading signal.
which is kinda why im stumped
08-13-12, 09:53 AM
#21
I think it must be the map sensor still, probably the 2jz one does not like being plugged in backwards either.
I just ordered a new 2.5 bar motorolla map sensor yesterday, when it gets here I will put it on and let you know if it works. for $14 plus shipping I figured it was worth a shot, this time I wont connect it backwards which I know shorts out the motorolla ones.
I just ordered a new 2.5 bar motorolla map sensor yesterday, when it gets here I will put it on and let you know if it works. for $14 plus shipping I figured it was worth a shot, this time I wont connect it backwards which I know shorts out the motorolla ones.
08-13-12, 09:24 PM
#22
What MAP sensor are you running? Your GE ECU will not read a turbo MAP sensor. You will need to run a piggyback, or like your tuners mentioned, go stand alone.
That's not entirely true...Aristo ECU's have a boost cut at 17~18psi. As long as you keep your boost levels under that, you'll be fine. If you are still running factory sequential twins, and boosting over 17psi, you'll go into low boost mode.
That's not entirely true...Aristo ECU's have a boost cut at 17~18psi. As long as you keep your boost levels under that, you'll be fine. If you are still running factory sequential twins, and boosting over 17psi, you'll go into low boost mode.
08-20-12, 06:59 AM
#23
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89421-12111, the label is kinda rubbed off but i believe thats it. Also have a 1j sensor looks slightly different
its weird, it seems the map sensor must be good. It drives a **** ton different map sensor unplugged vs plugged in so its obviously reading signal.
which is kinda why im stumped
its weird, it seems the map sensor must be good. It drives a **** ton different map sensor unplugged vs plugged in so its obviously reading signal.
which is kinda why im stumped
08-24-12, 12:41 PM
#26
gte & na-t
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Sorry to hear that bro, Remember you can't install the tt ecu on 10.1 compression engine with 91oct and start boosting hard.
TT engien are 8.5.1 so they have alot of room for error 10.1 you don't specially not on gasoline .
You need a tt hg if you gonna do it again and something to Tune.
TT engien are 8.5.1 so they have alot of room for error 10.1 you don't specially not on gasoline .
You need a tt hg if you gonna do it again and something to Tune.
08-24-12, 01:26 PM
#27
I still think you can run the tt ecu on a 10:1 compression, you just need to verify the timing or dial it back some and keep your boost low.
The timing may not be automatically correct even if you dont move the dizzy, they use completely different setups stock so its safest to re set it.
sj408 have you checked your timing yet? I am curious to know where it is.
If it was a matter of too much compression alone, I think you would have blown the headgasket before the bottom end.
The timing may not be automatically correct even if you dont move the dizzy, they use completely different setups stock so its safest to re set it.
sj408 have you checked your timing yet? I am curious to know where it is.
If it was a matter of too much compression alone, I think you would have blown the headgasket before the bottom end.
08-24-12, 01:54 PM
#28
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So how did you rewire the map? Im having similar issues. Usdm 550 w/resistor pack, aristo ecu, 2jzgte. Runs extremely rich 10.9 afrs, I have a map ecu installed, and have tried to lean the map during idle but it doesnt seem to do anything. The car can rev up to 3500-4000 rpm and then itl miss fire. I dont have the oem o2 sensor installed (was told to remove the oem o2 since i have the map ecu and a wideband). I am getting codes 21-o2 sensor and 31 maf sensor which i believe has to do with the map sensor. Ive tried taking off the map ecu and letting the stock ecu run, the car idles better but still runs pretty rich.
08-24-12, 02:07 PM
#29
gte & na-t
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Ali lol 10.1 with CA 91 oct ? he doesn't have alot of room for error so the bottom end will more than likely go..
10.1 with low octane don't go together , i hit 26 psi in my car on time when my wg lines got melt on the DP, I was scared as hell and brad told do worry ur fine!
10.1 with low octane don't go together , i hit 26 psi in my car on time when my wg lines got melt on the DP, I was scared as hell and brad told do worry ur fine!
08-24-12, 03:16 PM
#30
So how did you rewire the map? Im having similar issues. Usdm 550 w/resistor pack, aristo ecu, 2jzgte. Runs extremely rich 10.9 afrs, I have a map ecu installed, and have tried to lean the map during idle but it doesnt seem to do anything. The car can rev up to 3500-4000 rpm and then itl miss fire. I dont have the oem o2 sensor installed (was told to remove the oem o2 since i have the map ecu and a wideband). I am getting codes 21-o2 sensor and 31 maf sensor which i believe has to do with the map sensor. Ive tried taking off the map ecu and letting the stock ecu run, the car idles better but still runs pretty rich.
Ali lol 10.1 with CA 91 oct ? he doesn't have alot of room for error so the bottom end will more than likely go..
10.1 with low octane don't go together , i hit 26 psi in my car on time when my wg lines got melt on the DP, I was scared as hell and brad told do worry ur fine!
10.1 with low octane don't go together , i hit 26 psi in my car on time when my wg lines got melt on the DP, I was scared as hell and brad told do worry ur fine!
the only thing you change with higher compression tunes and lower octane is usually reducing the timing a few degrees. the ge at 10:1 can only run 10 lbs reliably/safely and some have pushed to 14 psi, but if you are advanced even 5 degrees it can make a huge difference, and 5 degrees is literally just a nudge of the distributor. thats why I always check before i boost.