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[Phate]

So my friend's got an elantra.  Kinda cheap feeling car in some ways, but overall not bad at all.  The motors in them are actually not too bad, but there doesn't really seem to be much out there in the way of engine management.  Plenty of turbo and supercharger hardware, but I'm not sure what they run for management.  If we can find decent management, we are probably gonna show it a few pounds of boost.

Car has:  2.0L DOHC I4
MAF with a little bit of headroom (although the older ones were speed-density on the same engine)
gay returnless fuel system that doesn't let you run an FMU
Was designed by former Starcraft: Brood War tournament runner-up

The only piggybacks I've seen used are the SMT-6 and unichip setups with additional injectors, and even additional injectors activated via hobb's switch.  Seems kinda ghetto.  Mostly wondering if anyone's dealt with a boosted elantra or tiburon.

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[Robb]

What year elantra?

[Phate]

What year elantra?

2004, first year they switched them over to a MAF.

[slappynuts]

I looked into tuning that ECU for a while.No matter what I did I could not get galletto to comunicate with that ecu.The ecu in that thing seems to be a korean bosch motronic ecu knockoff without an external eprom.There is a provision on the board for an external eprom however.

So here is what you need to do. Put the processor in boot mode and dump everything. Then toggle it to read from the external eprom.Then you need an adaptor for the 44pin PLCC chip to some sort of 16bit EEPROM.

Or rip that shit out and put in a haltech platinum sprint 500.

[Phate]

Wow, thanks hyundai.  I figured the ECU would basically be a ripoff of some other manufacturer's hardware.

Haltech or another standalone sounds a bit out of our price range for the time being.  We might just put boltons and a zex wet 50 shot on it and call it good.  Should still be pretty fun.

Although I might grab an ECU out of one of these from the junkyard next time I go to screw with.

[92CXyD]

Convert to a obd1 Honda p28.  ;D

If it can be to toyotas I can not see it not working for a Hyundai. :yes:

[dvst8r]

Convert to a obd1 Honda p28.  ;D

If it can be to toyotas I can not see it not working for a Hyundai. :yes:

Have to convert from maf to map first.

[92CXyD]

Convert to a obd1 Honda p28.  ;D

If it can be to toyotas I can not see it not working for a Hyundai. :yes:

Have to convert from maf to map first.

That should be easy if using part of a honda harness. ;D

[Joseph Davis]

I'm somewhat confident that's another permutation of the Evo motor.  You might be able to swap one in, but it'd require some research before you pull the trigger.

[kgx]

^that's what i was thinking. i wonder how close the cam/crank triggers are. DSM hardware might be an easier swap than honda hardware.

either way, i think that's your answer- find cheap programmable hardware and figure out what signals it needs to see.

[t_cel_t]

i know you guys are against it, for some unknown reason, but a megasquirt could click right into the harness.

[Robb]

That's the bastard vw ecu. Hang it up. Might as well get a standalone, or find lancer harness/ecu/sensors and swap what hyundai didn't use.

[Phate]

That's the bastard vw ecu. Hang it up. Might as well get a standalone, or find lancer harness/ecu/sensors and swap what hyundai didn't use.

I take it this is determined by it being a ripoff of a bosch motronic, without an external EEPROM?

[DasPoop]

if its a maf car can you run a bigger dia maf and larger injectors much the same way you run a 2g maf and 550cc injectors on a dsm. are hyundai mafs still mitsu units? how about bigger injectors and an afc? i know its not ideal but sure easier than ripping everything out for a stand alone.

[Joseph Davis]

So your logic is since it's loosely related to a DSM it'll be okay to get the load axis completely fucked in a manner that advances timing for the sake of an AFR, and let the KS worry about it?

I'd rather have an MS, sorry.

FYI, my MS hatred is only partially the limitations and quirks of the small handful I have seen, and partly the cobbled together mess the cars are.  I'm a big fan of DIY, and if it's an "I turbocharged my car for $63.25" sort of affair of course it rocks, but the MS mentality generally results in a grand producing the $63.25 result with a layer of conceit.  Guess what?  I'm right which is why MS never caught on like Crome did for Hondas.  Sure is some potential there but it'll be a while before it manifests.

[DasPoop]

So your logic is since it's loosely related to a DSM it'll be okay to get the load axis completely fucked in a manner that advances timing for the sake of an AFR, and let the KS worry about it?

A larger maf and larger injectors plus afc to make smaller adjustments wont skew it as much as using larger injectors and an afc to pull it back. if the maf still a bit of head room say 3 psi i would think if you paired all these together you could run 6-7 and still allow for decent timing and the ks not going crazy.

Also iifc i saw someplace a electric fmu for returnless cars or at least fords that alters the pwm to the pumps under boost for more fuel pressure. 

[Phate]

Also iifc i saw someplace a electric fmu for returnless cars or at least fords that alters the pwm to the pumps under boost for more fuel pressure. 

I've thought about something like that.  I could easily make a box to do just that, using a cheap microcontroller.  The issue is that these engines really like keeping things at 14.7:1, and will aggressively pull fuel to stay there.

Actually, if they had a faster processor, I could probably run the whole engine with one of the basic stamp robotics boards I have laying around.

[DmC]

Also iifc i saw someplace a electric fmu for returnless cars or at least fords that alters the pwm to the pumps under boost for more fuel pressure. 

I've thought about something like that.  I could easily make a box to do just that, using a cheap microcontroller.  The issue is that these engines really like keeping things at 14.7:1, and will aggressively pull fuel to stay there.

Actually, if they had a faster processor, I could probably run the whole engine with one of the basic stamp robotics boards I have laying around.

It's called a boostapump from KenneBell. Basiclly all it is is an amplifier that feeds the fuel pump a steady 18v and switched on or off from a hobs switch. We throw the instructions in the trash and pocket the hobbs switch for possible use elsewhere then just wire the boostapump to run all time after that just tune the maf transfer function to suit the new fuel flow.
And like you said the ecu's aggresively fight for 14.7 and with no way to tune the maf curve the ecu's going to be pulling 40%ish fuel for a minute or two and then decide the maf is junk and fail it.    this is all ford dodge and gm stuff I'm talking about if I had to tune that hyundai it's already been mentioned look into fitting some evo hardware.

[slappynuts]

Also iifc i saw someplace a electric fmu for returnless cars or at least fords that alters the pwm to the pumps under boost for more fuel pressure. 

I've thought about something like that.  I could easily make a box to do just that, using a cheap microcontroller.  The issue is that these engines really like keeping things at 14.7:1, and will aggressively pull fuel to stay there.

Actually, if they had a faster processor, I could probably run the whole engine with one of the basic stamp robotics boards I have laying around.

You are 100% on the money as far as what the ecu will do. We had a turbo tiburon at the shop that was a total bitch and the owner tried ever piggyback known to man with the exact same results.

And for the honda leg humpers  ;D Good luck fitting a honda distributor to that motor. If you want to fit a reasonable tunable ecu to the car I think the early 1.8t A4 may almost be a plug and play.lol  The other option would be a OBD1 BMW 319 from 93-95. You will have to put up with the mousetrap AFM though which will suck balls. I believe I may have a defenition file for tunerpro for this ecu as well (I built and tuned one of these).

[Joseph Davis]

So your logic is since it's loosely related to a DSM it'll be okay to get the load axis completely fucked in a manner that advances timing for the sake of an AFR, and let the KS worry about it?

A larger maf and larger injectors plus afc to make smaller adjustments wont skew it as much as using larger injectors and an afc to pull it back.

100% incorrect. 

For the same size "larger injector" you hit your desired AFR at precisely the same MAF voltage (or frequency) whether you arrive at that voltage via AFC or a larger/recalibrated MAF.  Your ignition timing is going to be the exact same.  Either method is dumb as shit, divorces the load axis, and is inferior to MS.

And for the honda leg humpers  ;D Good luck fitting a honda distributor to that motor.

Wrong thread, Doctor B.  That's not a motor I'd fit a Honda distributor to - they have their place, but it's not on everything.