ROB TUNE problems

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meatball671
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ROB TUNE problems

Post by meatball671 » Sat Jul 27, 2019 10:42 pm

Hello everyone, we recently obtained a rob tune ecu and a ignition converter second hand. We got it installed with the 550 injectors and the n/a maf. Once we went to go start the car, it would start but it's currently running on two cylinders. I'm expected the ignition converter to be faulty. I emailed rob to see if he can make a new one for us, but we'll see. I know other people have had this problem. Seeing if anyone can help us with this problem. the car is a 93 turbo wagon with a 5 speed swap, the car ran great on all four cylinders before the conversion. I was also wondering if anyone had an extra one, or if they wanted to sell one, thanks.
Jonah

92 legacy wagon N/A 5MT
93 legacy sedan 25th anniversary edition 02 wrx swap ver 2 jdm 5MT
93 legacy TW 25th anniversary edition 4EAT stock with supporting mods
94 legacy TW 4EAT built ej22t vf-34 CES exhuast

carfreak85
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Re: ROB TUNE problems

Post by carfreak85 » Mon Jul 29, 2019 4:51 pm

Well, installing the N/A MAF certainly isn't part of this recipe, you need a MAF from a turbocharged car.
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mike-tracy
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Re: ROB TUNE problems

Post by mike-tracy » Mon Jul 29, 2019 5:07 pm

Negetive, the 1992-98 NA maf is what the robtune calls for. It is the same as the MAF that came with ej20g engines.

Question for you Meatball, do you have an igniter that has been modified to go with your ignition converter? I don't know if it is or isn't necessary with Rob's device, but I had one with my home built ignition converter.

What else have you modified wiring wise in order to run the robtune?
1992 Legacy SS 5mt, build in progress
Josh Colombo wrote:
Mon Jan 14, 2002 10:23 am
Wait....I'm confused now.

meatball671
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Re: ROB TUNE problems

Post by meatball671 » Tue Jul 30, 2019 2:22 pm

We have the stock ignitor installed, we did the wiring in the write up, we merged the map group, and de pinned the two wires he said to in the write up
Jonah

92 legacy wagon N/A 5MT
93 legacy sedan 25th anniversary edition 02 wrx swap ver 2 jdm 5MT
93 legacy TW 25th anniversary edition 4EAT stock with supporting mods
94 legacy TW 4EAT built ej22t vf-34 CES exhuast

wtdash
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Re: ROB TUNE problems

Post by wtdash » Tue Jul 30, 2019 4:36 pm

I bought one used and it was bad, too. So, yeah.

There's a post on here about how to make your own converter.

And it's listed in HERE SOMEWHERE..
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ride_child
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Re: ROB TUNE problems

Post by ride_child » Tue Jul 30, 2019 4:48 pm

the only time you dont need to have the ignitor at all is with the cop setup. if you are using a converter, the ignitor needs to be modified!
Kris

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meatball671
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Re: ROB TUNE problems

Post by meatball671 » Tue Jul 30, 2019 5:39 pm

What needs to be modified with the ignitor?
Jonah

92 legacy wagon N/A 5MT
93 legacy sedan 25th anniversary edition 02 wrx swap ver 2 jdm 5MT
93 legacy TW 25th anniversary edition 4EAT stock with supporting mods
94 legacy TW 4EAT built ej22t vf-34 CES exhuast

Legacy777
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Re: ROB TUNE problems

Post by Legacy777 » Tue Jul 30, 2019 6:52 pm

ride_child wrote:
Tue Jul 30, 2019 4:48 pm
the only time you dont need to have the ignitor at all is with the cop setup. if you are using a converter, the ignitor needs to be modified!
That's only if you're using the newer style COP with integrated igniter.
Josh

surrealmirage.com/subaru
1990 Legacy (AWD, 6MT, & EJ22T Swap)
1997 Impreza OBS

If you need to get a hold of me please email me rather then pm

meatball671
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Re: ROB TUNE problems

Post by meatball671 » Tue Jul 30, 2019 8:42 pm

So does the igniter need to be modified?

Here's a mod list for the car to help out

1993 legacy turbo wagon

5 speed swapped

Stock ej22t SOHC heads stock internals

Vf39 turbo, slanty top mount, msd coil pack, ngk wires with ngk plugs, 550cc injectors, n/a jecs maf, custom turbo intake pipe with stock air box, grimmspeed MBC, iag aos
Jonah

92 legacy wagon N/A 5MT
93 legacy sedan 25th anniversary edition 02 wrx swap ver 2 jdm 5MT
93 legacy TW 25th anniversary edition 4EAT stock with supporting mods
94 legacy TW 4EAT built ej22t vf-34 CES exhuast

Legacy777
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Re: ROB TUNE problems

Post by Legacy777 » Wed Jul 31, 2019 6:07 pm

Have you followed the instructions in Rob's thread about the ignition converter?

https://bbs.legacycentral.org/viewtopic ... 90#p350690

Beyond that, I'm not sure what other modifications are necessary.
Josh

surrealmirage.com/subaru
1990 Legacy (AWD, 6MT, & EJ22T Swap)
1997 Impreza OBS

If you need to get a hold of me please email me rather then pm

meatball671
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Re: ROB TUNE problems

Post by meatball671 » Wed Jul 31, 2019 10:29 pm

Yes
Jonah

92 legacy wagon N/A 5MT
93 legacy sedan 25th anniversary edition 02 wrx swap ver 2 jdm 5MT
93 legacy TW 25th anniversary edition 4EAT stock with supporting mods
94 legacy TW 4EAT built ej22t vf-34 CES exhuast

meatball671
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Re: ROB TUNE problems

Post by meatball671 » Thu Aug 01, 2019 12:18 am

i'm gonna try and swap the wires around tomorrow.
Jonah

92 legacy wagon N/A 5MT
93 legacy sedan 25th anniversary edition 02 wrx swap ver 2 jdm 5MT
93 legacy TW 25th anniversary edition 4EAT stock with supporting mods
94 legacy TW 4EAT built ej22t vf-34 CES exhuast

Legacy777
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Re: ROB TUNE problems

Post by Legacy777 » Thu Aug 01, 2019 5:40 pm

Ok, I wish I was of more help, but I'm not very familiar with the RobTune setup.

Let us know how it goes after swapping the wires.
Josh

surrealmirage.com/subaru
1990 Legacy (AWD, 6MT, & EJ22T Swap)
1997 Impreza OBS

If you need to get a hold of me please email me rather then pm

mike-tracy
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Re: ROB TUNE problems

Post by mike-tracy » Thu Aug 01, 2019 7:08 pm

I got confirmation that the robtune ignition converter does not need a modified ignitor.
1992 Legacy SS 5mt, build in progress
Josh Colombo wrote:
Mon Jan 14, 2002 10:23 am
Wait....I'm confused now.

meatball671
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Re: ROB TUNE problems

Post by meatball671 » Sun Aug 04, 2019 3:31 am

I was able to buy another converter from a guy, he went cop so I bought the converter off of him. So we'll see once it gets here.
Jonah

92 legacy wagon N/A 5MT
93 legacy sedan 25th anniversary edition 02 wrx swap ver 2 jdm 5MT
93 legacy TW 25th anniversary edition 4EAT stock with supporting mods
94 legacy TW 4EAT built ej22t vf-34 CES exhuast

Legacy777
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Re: ROB TUNE problems

Post by Legacy777 » Mon Aug 05, 2019 5:19 pm

Ok, thanks for letting us know and let us know how things work with the new converter.
Josh

surrealmirage.com/subaru
1990 Legacy (AWD, 6MT, & EJ22T Swap)
1997 Impreza OBS

If you need to get a hold of me please email me rather then pm

meatball671
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Re: ROB TUNE problems

Post by meatball671 » Fri Aug 09, 2019 6:14 pm

so I got the new box installed, and the car runs on all 4 cylinders now, but it's running super rich at idle. The afr sits around 10.9, vaccum is at -18. So I thought it maybe had gas in it still from running on 2 cylinders, I let the car idle for like 30 min to let it get to operating temp. Then I drove it around to see if it would clear up, but the car runs really rich at idle and low speeds, but once you get in the higher rpms it starts to clear up, and under small boost it seems pretty good with the afr around 14.

Another thing is too the rob tune we got has both the 440 and the 550 tune on it. I want to confirm that the 550 tune is when you have the jumper connecting the two prongs, or is it when you have it on one prong?
Jonah

92 legacy wagon N/A 5MT
93 legacy sedan 25th anniversary edition 02 wrx swap ver 2 jdm 5MT
93 legacy TW 25th anniversary edition 4EAT stock with supporting mods
94 legacy TW 4EAT built ej22t vf-34 CES exhuast

meatball671
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Re: ROB TUNE problems

Post by meatball671 » Fri Aug 09, 2019 9:54 pm

I meant around 11 afr under boost
Jonah

92 legacy wagon N/A 5MT
93 legacy sedan 25th anniversary edition 02 wrx swap ver 2 jdm 5MT
93 legacy TW 25th anniversary edition 4EAT stock with supporting mods
94 legacy TW 4EAT built ej22t vf-34 CES exhuast

mike-tracy
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Re: ROB TUNE problems

Post by mike-tracy » Fri Aug 09, 2019 10:00 pm

I don't have any experience with the new robtune boards, as I had the old school eeprom chip for mine. How old is your o2 sensor and coolant temp sensor? Your vacuum and afr readings sound in the ballpark of where you want to be.
1992 Legacy SS 5mt, build in progress
Josh Colombo wrote:
Mon Jan 14, 2002 10:23 am
Wait....I'm confused now.

mike-tracy
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Re: ROB TUNE problems

Post by mike-tracy » Fri Aug 09, 2019 10:03 pm

On Rob's site in the comments, he says:

No jumper is 440cc, jumper in position 1 is 550cc.
1992 Legacy SS 5mt, build in progress
Josh Colombo wrote:
Mon Jan 14, 2002 10:23 am
Wait....I'm confused now.

meatball671
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Re: ROB TUNE problems

Post by meatball671 » Sat Aug 10, 2019 8:26 pm

YAY IT'S FIXED, so I decided to pull the injectors and the injector for cylinder 4 had a ripped o-ring. I changed all the o-rings and put them back in the car, and the car runs perfect now, it's amazing how much the rob tune changes these cars.😁😁😁
Jonah

92 legacy wagon N/A 5MT
93 legacy sedan 25th anniversary edition 02 wrx swap ver 2 jdm 5MT
93 legacy TW 25th anniversary edition 4EAT stock with supporting mods
94 legacy TW 4EAT built ej22t vf-34 CES exhuast

Legacy777
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Re: ROB TUNE problems

Post by Legacy777 » Mon Aug 19, 2019 6:38 pm

Glad to hear you got everything sorted out and running good.

A good engine management and tune really makes a difference!
Josh

surrealmirage.com/subaru
1990 Legacy (AWD, 6MT, & EJ22T Swap)
1997 Impreza OBS

If you need to get a hold of me please email me rather then pm

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