<-- New to Miatas, Familiar with Turbos... Could you guys help answer some questions?

[jhuckstead]

I installed a kit I pieced together for my 99 Integra some years back. I have a '94 Miata now and I have a few questions about turbos and I thought maybe you guys could help me out.

1.) Injectors. How big are the stock and how big can the stock ECU handle?

2.) Piggy back ECU. Which is the best, and how much would one set me back?

3.) Map Sensor? Is it 1 bar(11psi) like honda?

4.) PSI? How many psi is safe on stock internals, can I get away with 11psi?

5.) Piping. What is the bigest diameter piping and/or exhaust I can run and keep A/C

6.) Oil Suppy. Does it T off of the oil filter or is there a better way?

7.) Fuel Pump. What HP is it good for?

[Phatmiata]

Jeff I thought you are trying to save money with this Miata? hahahhaa

[Phatmiata]

http://www.FlyingMiata.com has the best bolt on Turbo "kit" for 1994 Miata


1.) Injectors. How big are the stock and how big can the stock ECU handle?

Stock is no more than 10% over, best to get bigger injectors, you can use OEM Toyota Supra Turbo, or non-turbo Mk3, or 2nd gen RX7, but requires piggy back


2.) Piggy back ECU. Which is the best, and how much would one set me back?

Hydra, first, then Megasquirt has the best support


3.) Map Sensor? Is it 1 bar(11psi) like honda?

Miatas dont have a map sensor unless you use a stand alone computer


4.) PSI? How many psi is safe on stock internals, can I get away with 11psi?

depends on the size of the turbo, but I would not go over 15PSi, but torque is where stuff breaks


5.) Piping. What is the bigest diameter piping and/or exhaust I can run and keep A/C

keep your A/C 3" is most common for intake and exhaust


6.) Oil Suppy. Does it T off of the oil filter or is there a better way?

oil supply is on the exhaust side of the motor near the bell housing, and you have to drill pan to rec. oil


7.) Fuel Pump. What HP is it good for?

stock fuel pump is good til about 350, but injectors are more important

[Phatmiata]

You can also look into those Rotrex kits I was telling you about, this is less hassle, and really good output for a street car/daily driver.

check here

Project-G Goes Forced Induction - KraftWerks Rotrex Kit
---> http://mazdaroadster.net/showthread.php?4710-Project-G-Goes-Forced-Induction-KraftWerks-Rotrex-Kit

[RyanG]

http://www.FlyingMiata.com has the best "kit" for 1994 Miata


1.) Injectors. How big are the stock and how big can the stock ECU handle?

Stock is no more than 10% over, best to get bigger injectors, you can use OEM Toyota Supra Turbo, or non-turbo Mk3, or 2nd gen RX7, but requires piggy back Correct but if you are going to get new injectors I would suggest some EV14's from FIC or ID. Their spray pattern is much better and they idle better than stock.


2.) Piggy back ECU. Which is the best, and how much would one set me back?

Hydra, first, then Megasquirt has the best support I am going to disagree with this comment and just tell you to go to Miataturbo.net and contact Reverant to have him build you an MS2/MS3x for a parallel install. It is just over a 1/3 of the cost of a Hydra and all of its features actually work correctly. The support for megasquirt is out of this world. Hydra is a giant pile of shit, especially for how much it costs and the fact that every updates costs about the same as an entire ms2 kit.


3.) Map Sensor? Is it 1 bar(11psi) like honda?

Miatas dont have a map sensor unless you use a stand alone computer Correct


4.) PSI? How many psi is safe on stock internals, can I get away with 11psi?

depends on the size of the turbo, but I would not go over 15PSi, but torque is where stuff breaks Measuring goals by psi is stupid as 10psi on an EFR will blow your motor but 15psi on my IHI is still well within safe stock limits. The motor breaks because of wtq. Stock internals tend to be on the ragged edge around 250wtq.


5.) Piping. What is the bigest diameter piping and/or exhaust I can run and keep A/C

keep your A/C 3" is most common for intake and exhaust Retaining the A/C has much more to do with the turbo manifold design. I have seen 3.5" exhausts and intake piping used while retaining the A/C on top mount setups.


6.) Oil Suppy. Does it T off of the oil filter or is there a better way?

oil supply is on the exhaust side of the motor near the bell housing, and you have to drill pan to rec. oil Correct


7.) Fuel Pump. What HP is it good for?

stock fuel pump is good til about 350, but injectors are more important Correct

See above

[jhuckstead]

Thanks for the input... and yes my goal is to save money, but I'm always thinkin ahead to future projects, and not having $500+ a month car payments should be able to save money and have some extra left for a little fun... BTW How does the ECU read the boost pressure without a MAP sensor, I'm guessing I have to add one?

[Phatmiata]

See above

Ryan, is that a score of C+ then? hahhahaa :teehee:

Anyhow, I was trying to answer his questions on this forum before just blindly sending him off to another forum to get ate by internet wolves. :punchface:

[concealer404]

I installed a kit I pieced together for my 99 Integra some years back. I have a '94 Miata now and I have a few questions about turbos and I thought maybe you guys could help me out.

1.) Injectors. How big are the stock and how big can the stock ECU handle?

Not big enough. Upgrade your injectors.


2.) Piggy back ECU. Which is the best, and how much would one set me back?

Don't do it.

Megasquirt. $700 or less for a PNP.


3.) Map Sensor? Is it 1 bar(11psi) like honda?

That's not how Map sensors work. 1bar map sensor means it can only handle one atmosphere. You exhaust this without a turbo. 2bar is the minimum you need. I don't know what stock is, but when you go Megasquirt, you use a 3bar map anyways.


4.) PSI? How many psi is safe on stock internals, can I get away with 11psi?

PSI doesn't mean anything. How much power are you looking for?


5.) Piping. What is the bigest diameter piping and/or exhaust I can run and keep A/C

Exhaust piping can be 3". The intercooler/piping should be sized based on power goals and turbo.


6.) Oil Suppy. Does it T off of the oil filter or is there a better way?

Not sure how people do this, but should be pretty easy to find via a search.


7.) Fuel Pump. What HP is it good for?

Decent amount... i've seen upper 200s out of them. Really though... a Walbro 255lph HP is under $100 with install kit. Just get one.

[Phatmiata]

Thanks for the input... and yes my goal is to save money, but I'm always thinkin ahead to future projects, and not having $500+ a month car payments should be able to save money and have some extra left for a little fun... BTW How does the ECU read the boost pressure without a MAP sensor, I'm guessing I have to add one?


Come over to the shop today, I have a leftover goodie bag from Miatapalooza I found with a lot of tuners business cards and Mazda Branded stuffs..

The local (East-Side) Tampa meet is THIS Wednesday......... http://mazdaroadster.net/showthread.php?6138-Summertime-Edition-Meet-CU-ROTR-19-JUN-2013-Rick-s-On-The-River

Bring your butt out!! :mrgreen:

[concealer404]

Thanks for the input... and yes my goal is to save money, but I'm always thinkin ahead to future projects, and not having $500+ a month car payments should be able to save money and have some extra left for a little fun... BTW How does the ECU read the boost pressure without a MAP sensor, I'm guessing I have to add one?

Excellent guess. :D

[Phatmiata]

You can also just flip that black Miata and buy this one that has a turbo and other bells and whistles, he is a local Florida guy too.
http://mazdaroadster.net/showthread.php?6145-1996-Turbo-C-Package

[DazedandConfused]

http://www.miataturbo.net/diy-turbo-discussion-14/diy-faq-all-your-answers-one-big-post-4288/

[Left0verCurry]

Anyhow, I was trying to answer his questions on this forum before just blindly sending him off to another forum to get ate by internet wolves.

Sorry about that. But the info there is much more in depth.

[Phatmiata]

Sorry about that. But the info there is much more in depth.

No harm, no foul, I think that the link which DazedandConfused posted is more beneficial for most DIY types, but when the OP is just looking for a few simple questions, I think most can try to answer on here?

[jhuckstead]

PSI doesn't mean anything. How much power are you looking for?

I think 250-275 to the wheels should be fun. That where I was @11psi with a good tune and a Hondata piggy back in my teg. But I think it would be much more fun when thats goin to the rear wheels... :slayer:

[jhuckstead]

You can also just flip that black Miata and buy this one that has a turbo and other bells and whistles, he is a local Florida guy too.
http://mazdaroadster.net/showthread.php?6145-1996-Turbo-C-Package

Thats looks green on my monitor... but damn that is clean... low miles too... haha, everyone wants a jeep, thats why you can't find one under $6000

[jhuckstead]

Thanks everyone, and that DIY has some good info, thanks DazedandConfused

[DazedandConfused]

garret 2560r should get you to your goals with maintaining quick spool and not blowing the engine. Have fun in your ventures

[kung fu jesus]

Just my $.02.

I agree a PnP ECU is a must have. Piggybacks and other items are kludges and make a turbo on these cars a bit of a headache. Map sharing helps alot when trying to figure stuff out, too. Also, with a PnP like a Megasquirt, you can add COP ignition, which is a huge upgrade over the stock Miata system.

There are a large number of Miata tuner specialists. The top three that pop into my mind are Flying Miata, BEGi, and TrackSpeed Engineering. Miataturbo.net is valuable resource, but the members can be caustic. There is more technical data and info there than you can shake a stick at, but you have to have thick skin to post over there.

The '94 is considered one of the best to turbocharge; OBD1, 7" LSD, 1.8 BP, solid chassis. Both the 1.6 (b6) and 1.8 (bp) motors were originally designed and engineered as turbo motors. They are essentially detuned versions in the Miata. Oil squirters under the pistons help a lot. Your engine should have an oil port capped off on the drivers side down near the firewall.

A turbo miata is enormously entertaining to drive, but you have to set goals or you will start breaking stuff. The chassis can take it.

[concealer404]

I think 250-275 to the wheels should be fun. That where I was @11psi with a good tune and a Hondata piggy back in my teg. But I think it would be much more fun when thats goin to the rear wheels... :slayer:

Easy button is an FM2 kit, Megasquirt, ID1000s, and an FM clutch.

Done.

[blenderblast]

I'm pushing 200rwhp @ 8psi. Stock internals, 3" exhaust, Walboro 255, '01 Miata injectors (different spray pattern from tan tops), 2.5" intercooler plumbing, Voodoo Box fuel management piggy back, and a Bipes ACU piggy back.
Don't cheap out on anything. Do it right, skip all the piggy back sh*t and get a stand alone ECU.

[Phatmiata]

I'm pushing 200rwhp @ 8psi. Stock internals, 3" exhaust, Walboro 255, '01 Miata injectors (different spray pattern from tan tops), 2.5" intercooler plumbing, Voodoo Box fuel management piggy back, and a Bipes ACU piggy back.
Don't cheap out on anything. Do it right, skip all the piggy back sh*t and get a stand alone ECU.

Jeff, this was the Miata I told you about, LOL. It was hard to pull away from him on the highway with my Mazdaspeed3 :shock:


oh and whoo hooo!! Corey got his internet back!! party time!!! see you Wednesday!! (Slacker)

[jhuckstead]

Jeff, this was the Miata I told you about, LOL. It was hard to pull away from him on the highway with my Mazdaspeed3 :shock:


oh and whoo hooo!! Corey got his internet back!! party time!!! see you Wednesday!! (Slacker)

I see... and only 8psi... where is a good place to get dyno tuned around here in Tampa. I went to LHT Performance in P Park for my Integra, but hes mostly a honda guy.

[RyanG]

I don't know of any Miata specialty places in Tampa but ISC racing is not that far away and they know Megasquirt and Miatas very well. I would probably use them to make sure it was done right the first time.

[jhuckstead]

I don't know of any Miata specialty places in Tampa but ISC racing is not that far away and they know Megasquirt and Miatas very well. I would probably use them to make sure it was done right the first time.

Thanks, I'm gonna have to check them out.

[blenderblast]

I just fixed my car, so I'll be looking.to put it on a dyno. I'm going to talk to my older brother here in the next couple of days. He'll be the guy to know a good trust worthy dyno place. I'll let you know when I know.