t25 turbo install!
 

Hi, I'v been on here for awhile lerking in the background trying to get my info together.

I was jumping from one idea to the next for the past few months on what to do with the miata.
I have settled on what I want and am getting all the bits together at the moment.

So far I'v got my manifold, T25 turbo, 550cc rx7 injectors, walbro 255lph, and megasquirt pnp is getting ordered this week hopefully.

So my main qustion is, what else do you think I'l need to get the car going, I'm not talking brakes and suspension!:loser::jerkit:
I know i need a wideband, but what else will I need,and is what I'v collected so far suitable!

Help appreciated!:bowrofl:


Heres some snaps of the car in question.
http://sphotos.ak.fbcdn.net/hphotos-..._5790246_n.jpg

http://sphotos.ak.fbcdn.net/hphotos-..._4728790_n.jpg

http://sphotos.ak.fbcdn.net/hphotos-...2_683788_n.jpg

http://sphotos.ak.fbcdn.net/hphotos-..._4533983_n.jpg

You need to read the FAQ, and a couple of build threads then report back.

Thanks for your advice!

Spent the last month or so crawling through hundreds of threads, mainly to do with megesquirt, trying to get abit of info on tuning and stuff.

Anyways, here's the parts list as it stands so far.

Have most of the parts together now to get it turbo'd.
Its taken so long because I didn't want to go down the rout of buying a premade kit, with a piggy back ecu, I wanted someting that could have the potential of getting alot of power if I wanted.

So anyways here's the parts list so far that I'v gathered!

T25 Turbo
Cast Manifold
Braided oil feed, return, and all the neccessary fittings
550cc Rx7 Injectors
Inovative Motorsports Lc-1 wideband sensor, with controller + Gauge
Megasquirt pnp, Installed and running sweet
Boost controller + Gauge
Intercooler + piping

The car is running well with the ecu, and no issue's as of yet.

Hope to fit the injectors this week and hopfully get the car running right again, not quite sure what will need to be done! I'l prob try get the lc-1 in at the same time, should aid me somewhat!

Then once there in and the car is running sweet, I hope to start the build.

One question I do have, is do you think I need to get a pump aswell or will the standard one hold up, I only plan on running low enough boost, probably in or around 0.6bar/ 9psi

Any help info would be much appreciated.

Unless your fuel pump is going bad it will be fine, those 550s will give ya about 240 ish hp with stock pump.

Don't really like the wheels. The front lip looks terrible. You need to get it off the ground, unless you like riding your bump stops half the time. Your list looks pretty good, just add suspension and proper fitting wheels/tires. Oh, and a 3 inch. However, I appreciate the AE86 cars. My first car was a GTS coupe. It was 3 different colors and I bought it for nothing. It was before the got big. I had some BMW mesh wheels on it and the car was eventually painted back red. It is a truly engaging car to drive. It is ashame everyone ruins the handling of them by slamming them. I wouldn't have sold it. But it was a 1000 dollar profit that allowed for the miata. In hindsight, an LS1 in a AE86 would be tits.

Great, thats what I wanted to hear!:bowrofl:

I had a new 255 there, but ended up selling it because I was short on cash!

Em thanks?!

Whats wrong with the wheels, banded vw g60 steels. 8 and 8.5's.
Front lip doesn't look great, but it stands up to alot of abuse, so a crapy hard plastic one or fiberglass one wouldn't do.
Suspension is fine, I'v done around 20k km's like that with no bother! It is a bit low yes, but its just the way I like em!:drool:

As for the aee86, a few of my mates are die-hards! A few tasty ones around here!

I'll add a re-route to your list. Improving the cooling system never hurt anyone. Raise the car a bit, functionality never hurt anyone neither.

Was thinking of a reroute alright, may look into it abit more now.

As said in my last post, I've done 20kms on that set up! And thats on Irish roads, which are beyond crap!

True, to each their own. Some like in the butt :dunno:

Ha yes, some do!

There appears to be a dead body at your photoshoot.




Alternate captions I considered:

HOLY SHIT, SOMEONE CHECK THAT GUY'S VITALS!

That guy is slammed even when he's not in his car.

He's our gimp, like from pulp fiction.

Winner

You should go visit clubroadster.net. I think that site is more up your alley.

I'm actually doing the same exact build, only I have RC 370cc injectors.

When you do eventually go turbo keep us updated with pics and progress, I'll be watching closely :)

But uh, may want to keep the talk about your rims and suspension to a minimum here...

Why's that? I'm here to talk about turbo's!

Will do, hope to start at it soon, once I have my injectors in and running, which I'm confused about!!

And I'm not talking about my suspension or wheels, other peaople are, I'm here for boost!

Nah, he hasn't shown signs of being douchebag.

Good answer.

I think a thank you is in order?!!:laugh:

Yes, I am into drifting and lowering cars too much and all that shit, but I'm not here to talk about that, because we have plenty of those sites at home, in which I am active members, however we don't have miata turbo specific sites at home, so thats why I'm here.
Hopefully I'll learn a bit, and get some help, if needed when I actually get around to glueing the turbo onto the side of my engine!
I'd imagine the help will be needed with the tuning side of things rather that the actual mechanical work though! Tuning scares me!:confused:

Tuning? Megasquirt + TunerStudio = win

Just set your target and drive.

I suggest trying to get the wideband installed and working before doing the injectors, for two reasons. A) the lc-1 is finicky to install for some people (me included) and you will definitely want to know that the wideband is working correctly before putting in bigger injectors.
and B) the wideband will help you know how well the ecu is set up, and will probably provide information that is vital to you getting your car running well with the new injectors.

as far as installing the injectors go, its a really easy job, read the ms manual about it to get all the ecu requirements, (reqfuel), and its just unbolting the fuel rail and popping in the new injectors and wiring them.

good luck,
Evan

This x 1000. You're being pretty cool. So i wont make fun of your car as much any more. What your looking for here you will find as far as turbo's whether you want 200 or 500 hp. You have taken a correct step in megasquirting your car first off. I was able to get mine kind of peppy with the megasquirt. But... there is no replacement for a magical turbo.

Just downloaded it now, is it really that easy though! I hope so, I'll mess around with it at the weekend. Thanks

I'm here for the info! and so far, from all the reading I'v done I think I've learnt a hell of alot about miata turbos!
I'm not interested in 500, more like a subtle 200 would do me;)

Yep Megasquirt was a must, I had toyed with the idea of a bipes and fmu, but I thought If I'm going to do it, I may as well do it right!

I'll fit the wideband tomorrow and see how I get on, and then possible get the injectors in by the weekend.
As far as fitting the wideband, would the cat be a suitable place for it, obviously there's no core in the cat:loser:
It would be an easy place to stick it, as its only four bolts holding it in!

tuning fuel can be, if you pay for the extended version. There's still more than tuning a fuel map that these n00bs don't understand ;)

^True.

Do buy the extended version. You'll be able to easily get a safe tune.

Okay, just bought it, well I gave them money, hopefully I'll get something in return!! Is there a download link in the email I'm waiting on?

To tell you the truth, all I want is a safe map, I'm not actually interested in getting huge power at the moment, I've other issues to sort before I go for that.

As long as the cars not going to blow up the minute I see some boost then I'll be happy enough!

should just need to enter the registration code into the software.

Yeah thanks, just got it after I posted, all done now, I'l fit the wideband tomorrow, will it be okay in the cat?

Check this thread out. I'll be running mine up through the engine bay and through the firewall though.

https://www.miataturbo.net/showthrea...deband+install

cool people position the sensor just in front of the cat, then they put the controller behind the radio and bring the sensor down under the shift boot.

Meh. I'd rather put it in an A-pillar pod and keep my air vents :)

Now that I think about it, I am pretty cool, I mean I do drive a soft top, in Ireland, you'd have to be cool to do that!

Air vents Don't bother me, I'l keep the two on either side, the ones in the centre console can be donated to a greater cause!

One for all the haters of my little car:fawk:, some snaps from a recent feature.

http://juiceboxforyou.com/wp-content...t1-590x394.jpg

http://juiceboxforyou.com/wp-content...t2-590x394.jpg


Got a little bit done on the build, welded the bung into the exhaust, after a look at the possible locations for it, I ended up putting it into the neck of the cat.
Going to dive into the dreaded wiring!UUHHHH, just having a look at a few build threads to see how to do it!

your wheels are broken.

Yes they seem to be alright!!:yippee:

they seem to look stupid too.

Cuts deep:sad2:

Where's the lemon juice? Or room 101.

Got the wideband in yesterday, oh god was that a horrible job. I don't have the patients for wiring!:crx:

But its now up and running all the same. Although I'm not too sure of the accuracy, the gauge and megatune are reading differently. And as far as the gauge is concerned, the car is overfueling abit.

This is all on the Megasquirt base map, so abit of fiddling will be needed to see what the story is with it!

And a quick question for someone in the know, for programming the lc-1 into the ecu, what is the volt output from the lc for 14.7?

Hope you used the same power and ground for the ecu, LC1 is finicky like that.

Injectors are in and the car is running! Although its running shit!

Starts up and idles fine, however once you give it juice, there's a hesitation, but the car does run.

I'm running 550's, req fuel set to 5.6, and the PW where change using the calculator I found on here.

What should I be fine tuning to get it right, is it a req fuel problem, a fuel table problem or what?

what was the Req_fuel prior?

it should be scaled in relation to the change in injector size.

same as cranking PW, however you subtract the 1ms opening/closing time from calc then add it back in.

13.4 before hand, I just used the built in calculator to get the 5.6.

And used the formula I found on here to scale down the PW.

((Old PW-1)/550*230)+1 I think it was.

sounds correct.

you have to adjust the acceleration enrichments the same way as well if MS-I.

I'm MSPNP, does it have to be done with that, and would it be the rpm based acc enrichments?

Plz learn how to use emoticons like :bowrofl: correctly. Only use it if something is funny. Thanks.

PLZZZZZ learn how to spell properly.:bowrofl:

rpm based should be disabled. unless you car is a 96-97. but the acceleration wizard values are the ones you want, just scale them * .418

Yeah it is disabled.

Acceleration Wiz is set to Map based, and Im to scale the Value(ms) and the Rate kPa/s) by .418? Or just the value?

Thanks for the help.

PLZ DIAF ****** :bowrofl:

Got my acceleration enrichments sorted today, thanks to the Brain. Cheers for the help.

So since the car was running right with the injectors I realised that I've run out of excuses for not putting on the turbo.

So stripped off the manifold and downpipe and started bolting shit on. Im going to go and make a proper build thread now!

Got a small bit done on the car today.

The oil feed and return are plumbed in.

I put the return in just beside th dip stick, was the easiest place to drill and fit it, and i think it should be okay, can anyone confirm that thats okay!!

Welding up my manifold too at the moment, pretty much done now, and should get the turbo elbow sorted tomorrow.

Almost there.

Sorry for the deadthread bump
But I'm interested in doing almost
the same thing so wondering how it turned out sir?