boosted

Ive used MS seceral times with great results, just bought my WRX bug and I am upping the power with a bigger turbo, intercooler, injectors and a megasquirt ecu. Anyone done this with megasquirt before?
I will happily post pics for anyone who is interested, thanks boosted

my94wrx

iTrader: (4)

not sure if anyone has done it before, but to be honest when you have open source software and all you have to purchase is a cable and wide band AFR there seems little point in spending out on megasquirt.

jura11

iTrader: (7)

Megasquirt is not best choice,similar function to Simtek.Your ECU is mappable without going for expensive ECU,like OS(cheaper option from £225-£350) or EcuTek(same function,but OS tune have few function more for your car price from £550)

As above contact here mappers as Neil@Slowboy Racing(he is located near Brands Hatch),Rich@FB Tuning or Duncan@Race Dynamix about the OS remap,Simon@JGM for EcuTek.

About the fitting bigger turbo i would recommend contact Neil@Slowboy racing(here is Neil tel.number 01474 854812 ) about the advice at first and later think about the bigger turbo etc.

Don't spend if you don't need,with good tune your car will have 270-280bhp,if you want more i would suggest VF34 or VF35,3port boost solenoid,Walbro 255LPH fuel pump,550cc STi injectors and decatted exhaust with STi up pipe(or ported headers with Up pipe from Harvey),FMIC or STi TMIC and you should have 330-350bhp

Jura

dynamix

iTrader: (3)

As said, there are much better options than megasquirt. As good as that is, it is very very basic and the std ecu is capable of everything that you want yet with factory starting, idling, safety and many other featires.

boosted

Here is pictures of me building and wiring my ecu into my car, and also ones of my new turbo... (cant remap my ecu as it has been locked out by ecutec) Also MS is very advanced and can do everything, if not more than some of the very expensive ecus can do, also i can fix it if it goes wrong.














Got the car running last night, will be going out tonight to start tuning the AFR and spark timing with wideband lambda and det cans, the ecu total cost of buying and installation has cost £210. I have installed pink 550cc/min injectors too and the car came with a walbro pump. I have also deleted the TGV valves.

Tidgy

holy moly, DIY ecu, i thought DIY mapping was bad lol

jura11

iTrader: (7)

Agreed Megasquirt is little bit DIY,but have nice features(as SimTek or other more expensive ECU),but problem is Mappers are not friendly with this ECU.I must ad,you can buy fully built ECU for more than half price of SimTek

Second thing with these ECU,i would don't go,due OS tuning is available in large on New age OE ECU and can be mapped professionally without the problem.



Jura

Tidgy

I know nothing about megasquirt other than the name, but if the features are there and as good as some of the main stream ecu's (be very carefull with which you compare it against, some are claimed to have features but in fact they are very basic and ni on useless) and you have the knowledge then sounds like your onto a winner. I wouldn't be surprised if 9 out of ten of them blew up the car though.

Midlife......

iTrader: (2)

What turbo is that.......the pics a bit blurry

Shaun

boosted

Its not the ecu that blows up the car, but the person who maps it incorrectly.
I went with MS as i have used it before, and i personnaly find the adaptability and user interface very good. Plus you can live map in real time with MS so no need to log and change figues and upload them later and log again ans so fourth. For less than the price of a basic re-map i have made my car totaly programmable, of course i do have a little bit of knowledge with this kind of thing as ive done it before.
Sorry, i-phone pics mate, was busy doing the wiring and sorts! its a td05 20g, its a chinese one! again i have used these before, with very good results.

boosted

Hi! yes MS is VERY diy! thats the good thing IMO, can be fixed and tuned all diy, I dont want a tunner near my car as i enjoy maping myself. Anyone who uses MS will not need a tuner as it is a diy ecu and they will be mapping diy. My ecu has many functions, water inj, antilag, boost control, nitrous inj, and many many more can be configured.
I cant map my subaru ecu, its locked also it cant be live mapped and it has a fault with the lambda circuit so would need replaced any way lol

boosted

On another note, MS is MAP sensing and so will not be effected by a slight boost leak either by hose or dump valve, and will also run with a hose popped off (with no boost).
My spec is:
Fully wrapped tubular manifold and up-pipe
Decat (to change to sportscat maybe?)
walbro fuel pump
TD05 20G turbo
Large top mount intercooler
STI pink 550's
Megasquirt fully programmable ecu and custom loom
K&N cone filter in the wing
Any idea of a safe power output for my clutch and gearbox, and dare i say it engine? And what boost level is safe? was thinking 1.1 bar, @ around 320 bhp?

jura11

iTrader: (7)

Yeah i know MS,something similar i'm considering on Punto GT( http://www.extraefi.co.uk/ ) in future.
About the function,yes they have function which are mainly on mainstream ECU as SimTek,Link,Autronic etc.

Problem with EcuTek,EcuTek can lock your ECU,this me put off from adding EcuTek on mine car and one issue which i don't want here talk...

Lambda circuit will be,your Lambda sensor is knackered or damaged,best bet is replaced with new Denso 4 wire(cost from eBay around £88-£100)

With good internals i would go to 330-350bhp at most cases,on standard gearbox and clutch,but i would advise to upgrade Brakes to better pads and discs.

Jura

boosted

Lambda problem is in the ecu mate! (burnt board) i am running wideband now with my new ecu
I have mintex pads and drilled and grooved discs, although these still get warm lol.
What boost will be 330-350bhp?

Tidgy

thing is i think the electronics side will be above most folks heads, let alone the mapping lol

boosted

Yeah i know what your saying lol, but the ecu is really easy to build, you just have to pay attention and make sure every join is a good one. The instructions are very good, easy to follow and explain what everything does (not that you really need to know) My kit took six hours to complete, and the loom took another three or four hours to make.

L.J.F

iTrader: (31)

I thought i had seen that turbo before that turbo is a one way ticket to an A.P.I rebuild.......

L.J.F

iTrader: (31)

Tbh mate if you are only going to run the car at a safe 320-330 then fitting the TD05-20G is a total waste of time and money. It will be really laggy and running next to no boost as the tubby is for 380+ and more suited to the 2.5 as it dont wind up in til about 4000rpm, by the time max boost is reached it will be time to change gear!

You are better off with a TD05 15G or a VF35.

Turbotits

iTrader: (2)

agreed with above. the turbo is way over kill for 320bhp a vf35 would probably have been better. but then it is a chinese one so may only do 320 i guess.

s70rjw

iTrader: (2)

You want the smallest possible turbo which is able to produce the bhp / torque you want. 20G will be very laggy with your setup
Get a refund on your cheap Chinese copy 20G and get a used VF35 or 34. They will work well with your supporting mods.
If you're going to do it, do it properly.

boosted

well if it makes 380 all the better i suppose as all thesupporting mods are there, and tbh after driving the car it doesnt seem that laggy at all to me. And LGF, you may diss the cheap turbo, but in my experience they are very good providing you treat them well and all the other components on your engine are working well, oil pump for example (I and a mate have used five of these turbos between us on seperate projects all with very good results) £200 for a brand new turbo is very good value IMO

boosted

Im affraid i have done it "properly" as i have done many times before, I am willing to try and educate some people that you dont have to spend a fortune paying for someone to map your car if you know what your doing, and your ideas on effecient turbocharging are not the best, pushing a small turbo to its limit for max power is a poor way of making big power imo

boosted

And this was a question not a statement

Midlife......

iTrader: (2)

I broke 2 Bug WRX gearboxes with a TD05 18G on my 02 bug WRX ......needed a Sti 6 speed to cope

Maximising a small turbo is not a good idea ??

Check out Andy Forrest and his small Turbo, the AFP 4H

http://www.andyforrestperformance.co.uk/16307.html

Shaun

s70rjw

iTrader: (2)

Glad you're confident you've done it "properly". Hope it lasts well. There's no need to be afraid either.
I'd suggest the lack of anyone else having used MS on an Impreza answers your original question. The standard Denso ECU can be cheaply mapped to the power levels you mention. Many have done so long before you bought your WRX.
I'd rather spend my money with a professional, using quality parts which carry a warranty and perform reliably.
I followed professional advice regarding size of turbo too.
Maybe you'd like to have a look over here at Andy Forrest's site.
http://www.andyforrestperformance.co.uk/16307.html
Andy is a well respected Subaru mapper. So good infact that he holds a certain record: 8.87 @ 164MPH The fastest manual Impreza ..........on the planet.
As the professionals have bode me well over the last 7 years of tuned Impreza ownership, I'll stick with tried and tested parts, together with reputable specialists thanks.
I'm glad you and your pals have had success with your Chinese turbos and find them to be good value for money
Do let us know how you get on in the future...........

boosted

My car is my hobby, im not a cheque-book racer and i like to work on it myself rather than to pay someone to do it (i have plenty of money but choose not to spend it on my car) It seems there are a few haters on here for anyone thinking outside of the norm.
Prehaps no one really understands what i have done as no one has asked any relevent questions about the conversion, like how i have got the rev counter working, how the abs is still happy, why the TGV has not caused a problem and how i have got round the imobiliser issues.
Also as i said before my std ecu is locked, and broken! and replacing it would have cost more than £210, then i still would have to buy a cable for £80 and then try and use tuning software that i am not familiar with.

boosted

This is my fear lol, Im not keen on small turbos at their limmit, the charge temps are high (if you read andys site he also says this) and it always feels like the car is backing up at high rpm, but this is just my view on things. I dont consider the 05 20g to be that big compared with the .63 ar t34's ive used on 2 litre cars in the past.

MrNoisy

iTrader: (28)

Just thought I'd add a thought as nobody else seems to have said it (although sorry if they have - I've skim read to here), but if your current ECU was locked by Ecutek, did you not simply think about getting a second hand one from a breaker?

Would have been far cheaper and less time consuming to fit, plus you could have used open source and wouldn't have had to chop up the various cables etc. Just a bit confused why you'd go down this route... but each to their own, tis what makes the scene so diverse

ukpaisley

iTrader: (4)

Keep up the good work, hope it all comes together. People own cars for different reasons, some for value, some for polishing and some experement and be different, tinker away !!

boosted

Valid point, but covered above, I can live map with the ms, and it has only cost a mere £210, im much happier with the interface as ive used it several times before. Worth mentioning MS is open source too, and free to download.
All the original loom is left intact mate i can resort to std in around an hour if need be