Jump to content
SAU Community

Recommended Posts

  • Replies 52
  • Created
  • Last Reply

Top Posters In This Topic

Shane

We are mainly talking about a RB26 with quad TB.

I have driven a car for 3 years with a Microtech and even had one running in my skyline for a couple of months.

They dont drive anywhere near as good as a standard computer on the street on cruise or anywhere near as good as a tuned Power FC.

Depends what you want from your car to what ecu you use. If i had my way I would have a Autronic.

^^^^^ What he said ^^^^^

Shane, admit it. Microtechs are crap on multiple throttle set ups. Even Jon warned me about it but nooooo, i didnt listen.

i understand a rb26 has 6 throttle bodies, but that want part of the original post which you were having a shot at me about champ. :(

rx engineering are doing a gtr as we speak, so once i know the results from that we will soon now if its a tuning issue or a ecu issues with the 6 throttle bodies.

Shane,

sorry man, i dont mean any disrespect and i know Jon is a good bloke and excelent rotary tuner, but he tuned my Microtech LTX12 controlled R33 GTR engine with multiple throttles, and it turned out shit. It was worse than shit. It was shitty shit shit! It idled between 600 and 2000 rpm, drove terribly, and made (get this) 209kw at the rears at about 12 pound boost! That would be funny if he didnt charge me so much!

It was a terrible experience.

Shane,

sorry man, i dont mean any disrespect and i know Jon is a good bloke and excelent rotary tuner, but he tuned my Microtech LTX12 controlled R33 GTR engine with multiple throttles, and it turned out shit. It was worse than shit. It was shitty shit shit! It idled between 600 and 2000 rpm, drove terribly, and made (get this) 209kw at the rears at about 12 pound boost! That would be funny if he didnt charge me so much!

It was a terrible experience.

My GT-R (an R32, mind) was tuned by MRC in Castle Hill, and runs an LTX12 plug'n'play. It has made 262rwkW at 17psi and has good mixtures, runs fine any time of the year, idles rock steady at 950rpm (after disconnecting the idle control valve) and can return well over 550km per tank of BP Ultimate, if you focus on trying for economy.

Seems funny to me how people seem to be bringing up the AFM Vs MAP&TPS thing (like the R32 specific LTX12 sequential fire uses), when this is EXACTLY the thing that makes a D-Jetro set-up better than a normal AFM'd PowerFC (I've seen reports of MUCH better economy with D-Jetro)

Anyway, carry on....

P.s Shaun- I want your log-in name :

What the fcuk does that mean? I dont get it?

Anyway, its good that youre stoked with your microtech. I had one on my Rb20 for about 3 years and it was good too. But my experience with them on an Rb26 was less than perfect; and thats an understatement. Im sure it was a combination of many things (ie, the tuner etc) but its left a bad taste in my mouth. Having dealt with an Autronic SM4 recently, however, has proven to me how good things can be.

But im sure if you spend enough time on any set up it can be good.

I still dont get the log-in name thing. Is your name shaun too?? Maybe i missed something. :D

my autronics smc runs perfectly with idle and cold starts, etc with map sensors so i doubt that is the issue with microtech being "lower quality" than the others.

im ripping out my autronics to try a pfc djetro, and a real tuner, unlike my previous tuners on the autronics who have been less than desirable.

as said any ecu is only as good as the tuner, and autronics tuners in wa are either good and arseholes or just plain useless, hence my decision to swap ecus, and ive been told im stupid for "down grading" from some, but plenty have been saying how good the djetro units are also, so time will tell if its the right decision.

anyone after an autronics smc (with auto tune), boost kit, 500r cdi unit and a set of msd coilpacks and all wiring to suit a gtr gimme a PM and ill let ya's know about it. wont be ready for sale for about 2-3 weeks or so though.

cheers

my autronics smc runs perfectly with idle and cold starts, etc with map sensors so i doubt that is the issue with microtech being "lower quality" than the others.

im ripping out my autronics to try a pfc djetro, and a real tuner, unlike my previous tuners on the autronics who have been less than desirable.

as said any ecu is only as good as the tuner, and autronics tuners in wa are either good and arseholes or just plain useless, hence my decision to swap ecus, and ive been told im stupid for "down grading" from some, but plenty have been saying how good the djetro units are also, so time will tell if its the right decision.

anyone after an autronics smc (with auto tune), boost kit, 500r cdi unit and a set of msd coilpacks and all wiring to suit a gtr gimme a PM and ill let ya's know about it. wont be ready for sale for about 2-3 weeks or so though.

cheers

You wont regret this ECU swap Brad.

Shane,

sorry man, i dont mean any disrespect and i know Jon is a good bloke and excelent rotary tuner, but he tuned my Microtech LTX12 controlled R33 GTR engine with multiple throttles, and it turned out shit. It was worse than shit. It was shitty shit shit! It idled between 600 and 2000 rpm, drove terribly, and made (get this) 209kw at the rears at about 12 pound boost! That would be funny if he didnt charge me so much!

It was a terrible experience.

now we are mates, and im not having a shot at you, but i feel its a bit harsh to comment on your experiences when you know that the bolts on the adjustable cam gears were not tightened and the car was dropped of to them in this way and they tuned it not knowing that. i am sure the cam changing around all the time would have had a fair bit to do with the power and the idle etc.

and, its about time i dropped by.

Shane.

now we are mates, and im not having a shot at you, but i feel its a bit harsh to comment on your experiences when you know that the bolts on the adjustable cam gears were not tightened and the car was dropped of to them in this way and they tuned it not knowing that. i am sure the cam changing around all the time would have had a fair bit to do with the power and the idle etc.

and, its about time i dropped by.

Shane.

Shane,

My oversight in properly tightening the bolts on the cam gears would have had no effect on the tune what so ever. Its not like the cam gears were turning independantly to the cams. Indeed; if this were the case, the engine would not run. If you had worked on an RB26 you would know this. And anyway, Jon (apparently) dialled in the cams, so if they were loose, i assume he would have rectified the problem, thus improving the tune. This, sadly did not happen and the car was a dog. In fact, i didnt even know they were loose while at RX Engineering; Jon didnt tell me this. Anyway, all thats history now and a lesson learnt; such is life.

We are mates, and i dont want to make it sound like im attacking you or Jon (that saga was mainly my fault im sure), but The whole Microtech thing just does not work well on 6 throttle GTR's.

And yes, we should catch up. My car should be ready soon. Its been almost 2 years!

Are you married yet? Emma and i bought a house too!

Shaun.

My next aftermarket ECU will be a PFC because I want the advantages of MAF load sensing .

I have used earlier Haltech's and an Autronic SMC and have to admit that the software makes a HUGE difference to the end result .

I cannot see how any MAP sensed ECU has a hope of controlling any multi throttled engine accurately because once manifold pressure rises to atmospheric (throttles wide open) the MAP sensor reading is constant so all you have is an rpm and air/water temp sensor signals to tune from . If the TPS signal shows fully open its a constant too . Once you get some positive manifold pressure different story .

I can't understand the resistance to PFC's , plug - tune , maybe with larger injectors and MAF metre . It sounds too easy and maybe thats the problem .

Cheers A .

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now



  • Similar Content

  • Latest Posts

    • OK, so again it has been a bit of a break but it was around researching what had been done since I didn't have access to Neil's records and not everything is obvious without pulling stuff apart. Happily the guy who assembled the engine had kept reasonable records, so we now know the final spec is: Bottom end: Standard block and crank Ross 86.5mm forgies, 9:1 compression Spool forged rods Standard main bolts Oil pump Spool billet gears in standard housing Aeroflow extended and baffled sump Head Freshly rebuilt standard head with new 80lb valve springs Mild porting/port match Head oil feed restrictor VCT disabled Tighe 805C reground cams (255 duration, 8.93 lift)  Adjustable cam gears on inlet/exhaust Standard head bolts, gasket not confirmed but assumed MLS External 555cc Nismo injectors Z32 AFM Bosch 023 Intank fuel pump Garret 2871 (factory housings and manifold) Hypertune FFP plenum with standard throttle   Time to book in a trip to Unigroup
    • I forgot about my shiny new plates!
    • Well, apparently they do fit, however this wont be a problem if not because the car will be stationary while i do the suspension work. I was just going to use the 16's to roll the old girl around if I needed to. I just need to get the E90 back on the road first. Yes! I'm a believer! 🙌 So, I contacted them because the site kinda sucks and I was really confused about what I'd need. They put together a package for me and because I was spraying all the seat surfaces and not doing spot fixes I decided not to send them a headrest to colour match, I just used their colour on file (and it was spot on).  I got some heavy duty cleaner, 1L of colour, a small bottle of dye hardener and a small bottle of the dye top coat. I also got a spray gun as I needed a larger nozzle than the gun I had and it was only $40 extra. From memory the total was ~$450 ish. Its not cheap but the result is awesome. They did add repair bits and pieces to the quote originally and the cost came down significantly when I said I didn't need any repair products. I did it over a weekend. The only issues I had were my own; I forgot to mix the hardener into the dye two coats but I had enough dye for 2 more coats with the hardener. I also just used up all the dye because why not and i rushed the last coat which gave me some runs. Thankfully the runs are under the headrests. The gun pattern wasn't great, very round and would have been better if it was a line. It made it a little tricky to get consistent coverage and I think having done the extra coats probably helped conceal any coverage issues. I contacted them again a few months later so I could get our X5 done (who the f**k thought white leather was a good idea for a family car?!) and they said they had some training to do in Sydney and I could get a reduced rate on the leather fix in the X5 if I let them demo their product on our car. So I agreed. When I took Bec in the E39 to pick it up, I showed them the job I'd done in my car and they were all (students included) really impressed. Note that they said the runs I created could be fixed easily at the time with a brush or an air compressor gun. So, now with the two cars done I can absolutely recommend Colourlock.  I'll take pics of both interiors and create a new thread.
    • Power is fed to the ECU when the ignition switch is switched to IGN, at terminal 58. That same wire also connects to the ECCS relay to provide both the coil power and the contact side. When the ECU sees power at 58 it switches 16 to earth, which pulls the ECCS relay on, which feeds main power into the ECU and also to a bunch of other things. None of this is directly involved in the fuel pump - it just has to happen first. The ECU will pull terminal 18 to earth when it wants the fuel pump to run. This allows the fuel pump relay to pull in, which switches power on into the rest of the fuel pump control equipment. The fuel pump control regulator is controlled from terminal 104 on the ECU and is switched high or low depending on whether the ECU thinks the pump needs to run high or low. (I don't know which way around that is, and it really doesn't matter right now). The fuel pump control reg is really just a resistor that controls how the power through the pump goes to earth. Either straight to earth, or via the resistor. This part doesn't matter much to us today. The power to the fuel pump relay comes from one of the switched wires from the IGN switch and fusebox that is not shown off to the left of this page. That power runs the fuel pump relay coil and a number of other engine peripherals. Those peripherals don't really matter. All that matters is that there should be power available at the relay when the key is in the right position. At least - I think it's switched. If it's not switched, then power will be there all the time. Either way, if you don't have power there when you need it (ie, key on) then it won't work. The input-output switching side of the relay gains its power from a line similar (but not the same as) the one that feeds the ECU. SO I presume that is switched. Again, if there is not power there when you need it, then you have to look upstream. And... the upshot of all that? There is no "ground" at the fuel pump relay. Where you say: and say that pin 1 Black/Pink is ground, that is not true. The ECU trigger is AF73, is black/pink, and is the "ground". When the ECU says it is. The Blue/White wire is the "constant" 12V to power the relay's coil. And when I say "constant", I mean it may well only be on when the key is on. As I said above. So, when the ECU says not to be running the pump (which is any time after about 3s of switching on, with no crank signal or engine speed yet), then you should see 12V at both 1 and 2. Because the 12V will be all the way up to the ECU terminal 18, waiting to be switched to ground. When the ECU switches the fuel pump on, then AF73 should go to ~0V, having been switched to ground and the voltage drop now occurring over the relay coil. 3 & 5 are easy. 5 is the other "constant" 12V, that may or may not be constant but will very much want to be there when the key is on. Same as above. 3 goes to the pump. There should never be 12V visible at 3 unless the relay is pulled in. As to where the immobiliser might have been spliced into all this.... It will either have to be on wire AF70 or AF71, whichever is most accessible near the alarm. Given that all those wires run from the engine bay fusebox or the ECU, via the driver's area to the rear of the car, it could really be either. AF70 will be the same colour from the appropriate fuse all the way to the pump. If it has been cut and is dangling, you should be able to see that  in that area somewhere. Same with AF71.   You really should be able to force the pump to run. Just jump 12V onto AF72 and it should go. That will prove that the pump itself is willing to go along with you when you sort out the upstream. You really should be able to force the fuel pump relay on. Just short AF73 to earth when the key is on. If the pump runs, then the relay is fine, and all the power up to both inputs on the relay is fine. If it doesn't run (and given that you checked the relay itself actually works) then one or both of AF70 and AF71 are not bringing power to the game.
    • @PranK can you elaborate further on the Colorlock Dye? The website has a lot of options. I'm sure you've done all the research. I have old genuine leather seats that I have bought various refurbing creams and such, but never a dye. Any info on how long it lasts? Does it wash out? Is it a hassle? What product do I actually need? Am I just buying this kit and following the steps the page advises or something else? https://www.colourlockaustralia.com.au/colourlock-leather-repair-kit-dye.html
×
×
  • Create New...