im bout to jump into the TT conversion and only thing im not sure about is ECU. been told u can run an NA ecu with a boost controller in place of stock TT ecu. if this was done and boost controller was on stock boost level would it make same power as TT ecu? and then say my NA ecu wasnt stock but was a Mines NA ecu could i also run this effectively with the boost controller. it gave my NA more power from better air/fuel maps so would it affect TT in same way? i know all of these setups would 'work' but i wanna know which would be best thanks in advance
You will have to get it chipped to suit the TT. The Mines chip you have is specifically for the NA. A TT will run on it, but would kill itself very quickly. There may be some issued with the FPCU, I'm not sure if the NA ecu has the pins wired up for the third control wire. Easiest way out, get a TT ECU. Sell the mines for $200 and buy a TT for $150.
fpcu no issue as its bypassed (running walbro). and yes the NA has the control wire just out of interest why would the mines kill the TT motor? its one that when power run COMPLETELY flat then reconnected will self tune over first 15 minutes of driving (so i was told anyway lol). i thought maybe if i had boost controller set to whatever i wanted it would maybe tune for optimal output? maybe??
I've heard these rumours in regards to the Mines ecu's before and I find them very hard to believe. Also heard a rumour on Nico that they have a faster chip in them too. No proof anywhere i have seen. The ignition timing requirements are different for a NA and TT, the ECU does get a knock signal, but no where near good enough to SELF TUNE. Same deal with the AFR's, it has the narrow band O2, but that is only good for cruising. Too much timing in the wrong spot = knock = rooted engine Not enough fuel in the wrong spot = too lean = holes in pistons
ye i get ya now. just hoped i could run that ecu simply coz ive only had it for like 2 weeks did make my NA noticeably quicker though. thanks for ur help
What he said. The "Self-Learning" function would eventually bring itself around to the boost way of thinking but not in 15 minutes of "normal" driving. See, "normal" driving would have little to NO effect on tuning as the fuel maps would be largely the same for each motor off boost. Perhaps a few increments here and there but nothing major enough to get hard with! Where the issue lies is in your on-boost tunning. The atmo ecu has no knowledge of these higher airflow demands. Its not often you get the opportunity to hold a specified boost pressure throttle position and engine RPM for long enough for the ECU to decide upon and re-write the fueling tables with any certainty at all. Closed loop self tuning is very hit and miss at best of times and takes far longer than 15 minutes! Youd be lucky to get a couple of light cruise cells re-written in that time Id predict unless the Mines chip has extrordinarily wide parameter cell settings (in which case self tuning would be as inconsistent as buggery!) I know with my own experience with my ECU which has specific fast and slow convergence closed loop tuning functions that it is very difficult to even get to, let alone hold the engine parameters (MAP and RPM) long enough to actually make a meaningful correction at anything above very light cruise. Map steps are about 8kpa wide and rpm steps are 100 rpm wide and have to be held and stabillised for 300 Ms before the ECU will overwrite a cell, which is very coarse. And thats just on vacuum maps. Try holding back 350 Hp in 1350 Kilos with a friendly long hill and brakes and maintain an 8kpa and 100rpm "window" for at least 300 Ms. Not as easy as it sounds!!!!! The only way to successfully "teach" the ECU boost requirements would be on a dyno with speed hold function and an extremely fine right foot control as well as knowing the exact parameter ranges required to allow the ECU to make a decision! Remember that the engine would almost certainly see a leaner condition to begin with before it learnt to richen up that cell in the load/rpm/throttle position tables.............. !!!!!! After all that pontificating and blather, yes the wise option is to fit a stock TT ECU and start ahead of the black ball rather than on the "engine possibly might go bang" side of it!!!!! L8r E
What they both said, but condensed. JDM NA Ecu's run fairly aggressive timing from factory to cater for their "better than us" fuel. MINES NA Ecu's run ridiculous timing in the mid range that with pump gas will murder a boosted engine running pump fuel. Fuel maps and everything else is fine, it's the timing maps that MINES go to town on to get the power from an NA motor. Oh and your ECU won't learn outside of closed loop and that's where the majority of your engine melting will take place. You could be lucky and destroy spark plugs first.
no worries thanks for the help guys. understanding this side of things a lot more now. i ended up getting the stock TT ecu with my motor anyways so ill run that and then possibly upgrade further down the track. guess ill sadly have to sell the mines then it definitely made a big difference to my NA motor mid to high rpm thats for sure. shame
Mines ECU Any mods needed to benefit from one of these. (for an NA) I spose I'd have to get mine socketed to fit it. How much are they new?? Any detriment to the engine?? (lotsa' questions, I know. but you've sparked my Interest)
Complete replacement ECU, the mines chips are covered in epoxy to stop people swapping them out. New they could have gone for $800ish++ Gotta run good fuel 98+ at all times. Timing is hellish advanced on the mines tunes, even more so for an NA.
its a direct swap for stock computer. just plug and play. ill be looking to sell mine too if your interested. mods i had was just pod filter, all lightweight pulleys and underdriven crank pulley, TTZ headers, full 2.5inch exhaust. car went surprisingly well against a lightly modified manual TT. TT only started pulling away through 3rd so it helps make an NA pretty quick provided right bolt on mods.
I know this thread has been inactive for a few months...... but pls!!! where can i get one of these? Im in sydney. With the lighter pulleys, i have been warned of introduced harmonics. Was this a problem for you or any other N/A's lobsta?
