2JZGE Na-T TT Ecu Mod
04-30-20, 07:28 PM
#4066
That’s because it was wired for the coils at first. But due to cracks the coils where arcing to the head and I switch back to the disy
there just taped off for now I am lazy and didn’t de pin them as I plan to go back with coils soon
there just taped off for now I am lazy and didn’t de pin them as I plan to go back with coils soon
04-30-20, 08:51 PM
#4067
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I'll probably go out there tommorow and mess with the plugs however if a plug was the reason I dont feel like I would have anywhere near full power but it still pull with full power has a little hesitation and has that pretty rough idle
where are you located ?
where are you located ?
05-01-20, 07:41 AM
#4069
I wrote out to adjust it back to 8 and step by step set the tps. do both of those things. I did notice at times 6 was a little low, so go with 8.
also checking your plugs, wires, rotor and cap is just plain a good idea as J suggested.
Yes tons of people have done the mod with the stock coil/distributor and just the ds62, it works fine.
For all we know you could have an ecu issues also, some of them have issues.
first do those 2 things above, then when idling I would look at the vacuum its pulling to check for leaks, and I would look at the air fuel ratio to see if it's right and o2 is working.
Did you check to see if the o2 sensor is working or at least wired to the right place, not sure if its the exact same between JDM non turbo and JDM turbo but one of them should be.
You are going to have to do some troubleshooting, not going to ask if you did everything on page 1.
also checking your plugs, wires, rotor and cap is just plain a good idea as J suggested.
Yes tons of people have done the mod with the stock coil/distributor and just the ds62, it works fine.
For all we know you could have an ecu issues also, some of them have issues.
first do those 2 things above, then when idling I would look at the vacuum its pulling to check for leaks, and I would look at the air fuel ratio to see if it's right and o2 is working.
Did you check to see if the o2 sensor is working or at least wired to the right place, not sure if its the exact same between JDM non turbo and JDM turbo but one of them should be.
You are going to have to do some troubleshooting, not going to ask if you did everything on page 1.
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Ali SC3 (05-01-20)
05-06-20, 12:04 PM
#4072
I currently do not have any codes I’m running a 340 Lph fuel pump At temp my afrs are in the 12.5 car runs good and now that I have my Ignition timing set correctly car pulls pretty well I just believe it’s way too rich at idle and under a load it’s in the tens sometimes nights
05-06-20, 12:37 PM
#4073
Is your map sensor teed into the fpr and going to the factory spot? in the picture above it looks like you were working on that.
Not sure why it would be idling at 12.5. you are on 440cc injectors right? seeing 10 in boost is not unusual, but not while driving around out of boost.
Not sure why it would be idling at 12.5. you are on 440cc injectors right? seeing 10 in boost is not unusual, but not while driving around out of boost.
.. Ill tee it back in tonight and see if anything changes
05-06-20, 02:05 PM
#4075
Of course that is the problem, you have to have that connected. it is not safe to run the engine or boost until it is connected... you will be rich at idle and super lean in boost!!!
Fuel pressure regulator changes fuel pressure 1:1 with boost, so for every psi of boost you get a psi more of fuel.
What alot of people gloss over is that when you are idling at -9 psi, that vacuum to the FPR reduces the fuel pressure by 9psi.
So in boost the fuel pressure moves up, and in vacuum the fuel pressure moves down.
so if you are idling and you disconnect it, it doesn't see the vacuum and you get like 9+ psi of fuel pressure than you don't want at idle.. and when you boost, it wont raise the fuel pressure with the boost so you can go lean and blow the motor quick. I'd fix it before you do anything else.
Fuel pressure regulator changes fuel pressure 1:1 with boost, so for every psi of boost you get a psi more of fuel.
What alot of people gloss over is that when you are idling at -9 psi, that vacuum to the FPR reduces the fuel pressure by 9psi.
So in boost the fuel pressure moves up, and in vacuum the fuel pressure moves down.
so if you are idling and you disconnect it, it doesn't see the vacuum and you get like 9+ psi of fuel pressure than you don't want at idle.. and when you boost, it wont raise the fuel pressure with the boost so you can go lean and blow the motor quick. I'd fix it before you do anything else.
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japsc85 (05-15-20)
05-07-20, 05:58 AM
#4077
So about 2-3 days ago The line in the tank connecting the pump to the hard line literally blew up car started breaking up pretty bad and then eventually ran out of fuel got it replaced connected the fuel pressure regulator took it for a ride last night and is now breaking up really bad in boost I will be throwing some new spark plugs in it this weekend I think somehow when the line blew up the plugs got fouled out it’s just a guessCar runs pretty good only breaks up in boost
05-07-20, 08:37 AM
#4078
what plugs and gap. I usually run the iridiums cause I have never fouled out a set even when dumping fuel. the coppers will foul out easier.
If you are on dizzy try the bkr7eix at a .026-.028 gap, and if on coils try them at .032 which is the gap they come at.
Also if you have never changed the cap and rotor on your dizzy, now is the time before it fails on you and leaves you stranded.
If you are on dizzy try the bkr7eix at a .026-.028 gap, and if on coils try them at .032 which is the gap they come at.
Also if you have never changed the cap and rotor on your dizzy, now is the time before it fails on you and leaves you stranded.
05-07-20, 11:34 AM
#4079
I planned on picking up some Iridium’s .. I do have coppers in there . I think I am just going to throw the coil packs in and see what happens . One thing I dislike about having the VVTI coil packs is they seem move around a lot
05-07-20, 01:28 PM
#4080
take the boots off and look for cracks, sometimes the boots get worn out also, they shouldn't be moving around enough to cause issues maybe you have a bad set, some just seem to have lots of issues. I have heard about heatshrinking over the plastic parts where the racks form on gte coils, maybe can do the same thing on the vvti ones.