for a US spec 1990 turbo II that is completely stock and currently boosts around 7 psi. I would like to get an aftermarket ECU to run 10 psi boost max. I will be adding a straight pipe from turbo back to y pipe and using stock mufflers. Might add a new fuel pump. My main concern for the ECU is reliability. I also want to keep everything else working as it does now.
Thanks!
Hi there, firstly welcome in :) I am running a knightsport chipped ECU which basically allows 0.9bar to run be run on the stock injectors (the ECU runs the injectors at the max duty cycle) There is also a fuel cut that will start to interfere with the fueling at a certain boost level. Its best to upgrade the ECU to ensure there is ample fueling else it might go lean on boost.
Before you up the boost you will need to do the following if you havn\'t already (for reliability and safety on the engine:
New fuel pump - Walbro 255 is good - stock pump is over 20 years old
Uprated radiator - oem rad is 20 years old with plastic caps that crack
New HT leads - HT leads are a perishable item (when did you last change them?)
Ported wastegate on the turbo (a straight through exhaust will cause boost creap)
Its best to do the supporting mods before you add more power, its usually the ancilaries such as the fueling or cooling that take out an engine rather than the engine itself.
Don\'t forget to add photos of your car up :D and take things slowly otherwise something might get damaged.
Greetings, I should have introduced myself :) My name is Tai. I have a black 1990 TII. Pics coming.
So I\'ve looked at knightsport and RE-A but only problem I see with those is that since I live here in the land of free, I can only get 93 US octane petrol and KS and RE-A are tuned for much higher.
Also thinking will just get the front pipe instead of straight pipe to stock mufflers. I\'m hoping that will keep the boost low as I wont be taking off the turbo to port the wastegate.
(http://i.imgur.com/usMYq.jpg)
m1tch: do you have the basic or advance version ECU?
Quote from: redfusion;828496m1tch: do you have the basic or advance version ECU?
Its an ooooold school OEM chipped ECU rather than a knightsport specific ECU, I also have an e-manage ultimate in mine to allow for logging and mapping as a piggyback.
Perhaps look at some old school fuel adjuster just to be on the safe side. I have heard of people running to 1 bar of boost on the stock ECU but I wouldn\'t recomend it.
Do you have a manual boost gauge fitted btw?
I would also check out FC3Spro for some tips on the car, here are some ideas around fueling for you - might be perfect for you to just dial in a bit more fueling to be on the safe side when adding boost :)
http://fc3spro.com/TECH/MODS/EL/FUELCON/fuelc.htm
Dont think I will run anything over stock boost on stock ECU. I want to keep my car for a long time :D
What I do want to do is find an ECU with actual mappings for fuel higher than stock to run with front pipe (down pipe). I\'ve emailed KS so we\'ll see if thats right for me.
The fueling computers add extra fuel above the stock ECU allowing you to run a bit more boost if you wanted, but yeah, you might as well have fun at stock boost :) the stock setup can take 0.9bar, the FDs take more boost as standard. There is plenty of fueling there for stock boost, I would suggest looking at swapping out the items I suggested though, mainly due to how old the items are, especially the fuel pump and the radiator.
I guess your issue might be due to your much lower octane fuel in finding a chip, my piggyback ECU is plugged into the wideband O2 sensor to check the AFRs, it might be worth perhaps getting a remappable ECU at some point and getting it mapped properly on a dyno to ensure that its ok on your octane of fuel. I do find it funny on youtube when some videos say how they are running crazy 92 octane fuel with octane boost....our fuel is 95 as standard or 98 or 99 high octane or indeed some 102 octane at certain specalist filling stations near tracks lol
I would definatly suggest swapping out some of the older parts first and get the car sorted :) some parts do cost a bit, but they are like a safety net for the engine.
My FC is on 86k miles, compressions of 7.2 on the front rotor,6.9s on the rear :) will be fine for aaaages lol
P.S. you have a rare item in your engine bay - the battery cover, most are missing, you will soon notice once you see other photos of FC engine bays lol
Im also getting used to the engine layout as the ABS and brake cylinders are swapped over as yours is LHD lol
This is my dream ride. I\'ve had 2 FDs one with twins the other with TD06 and also a NA FC before. All fun cars but this is my fav plus you dont see them on the road much around here.
Car has low mileage about half of yours. Cooling and fuel components have been tested and dont need to be replaced for stock setup. I would however replace radiator and fuel pump once I get this ECU thing sorted out.
How do you like the greddy emanage? I have a tuner about 300 miles from where I live and might consider that route too.
I have the emanage ultimate (not the blue one) and it does everything you need it to do, if you plug a wideband O2 sensor into it, it can map itself whilst you drive, they aren\'t cheap though and aren\'t that common.
I guess it depends if you can find a fixed chip that has mapping for US fuel rather than higher octane fuel like most chipped ECUs, I will have a look around to see if I can find any US chipped ECUs (if that makes sense lol)