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DIY Turbo Discussion greddy on a 1.8? homebrew kit?

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Old 12-02-2010, 12:31 AM   #1
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Default i need some turbo advice

i got a 90 miata witha 1.8 swap with stock 1.6 ecu wiring. and i just recently got a pieced together turbo kit. i have most of it. i have the manifold, garrett t28, piping intercooler, tial wastegate. i know i need some fuel and engine management. im only gona run 6-8 pounds of boost daily driver so what do you guys suggest as size injectors,fuel rail fuel pump. and i was also considering mega squirt. and i also need a down pipe any info would be greatly appreciated thanks guys
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Old 12-02-2010, 12:58 AM   #2
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You should totally get a megasquirt. It's cooler than a turbo.

I am just beginning to tune mine with rx8 injectors and stock fuel rail, regulator, and pump. At 8 psi (which is what I'm getting on wastegate spring only; no boost control yet) there is a decent amount of headroom in terms of injector duty cycle. Example datapoint: 150kPa, 11:1 AFR, 5500 RPM, 66% duty.

I paid like $50 for 6 rx8 injectors on ebay.
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Old 12-02-2010, 01:04 AM   #3
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Quote:
Originally Posted by Mr Jdm View Post
i got a 90 miata witha 1.8 swap with stock 1.6 ecu wiring. and i just recently got a pieced together turbo kit. i have most of it. i have the manifold, garrett t28, piping intercooler, tial wastegate. i know i need some fuel and engine management. im only gona run 6-8 pounds of boost daily driver so what do you guys suggest as size injectors,fuel rail fuel pump. and i was also considering mega squirt. and i also need a down pipe any info would be greatly appreciated thanks guys
We'd need to know what kind of manifold you have to give any input on downpipe. Pictures are a good start.

You say 6-8 pounds now... lol. You'll want more.

Injectors - anything ~440cc or bigger.

Fuel rail/pump - can remain stock if healthy.

MS - yes, you'll want an EMS.
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Old 12-02-2010, 04:51 AM   #4
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Quote:
Originally Posted by Mr Jdm View Post
i got a 90 miata witha 1.8 swap with stock 1.6 ecu wiring. and i just recently got a pieced together turbo kit. i have most of it. i have the manifold, garrett t28, piping intercooler, tial wastegate. i know i need some fuel and engine management. im only gona run 6-8 pounds of boost daily driver so what do you guys suggest as size injectors,fuel rail fuel pump. and i was also considering mega squirt. and i also need a down pipe any info would be greatly appreciated thanks guys
So you posted on both here and CR.net? Dude take my previous advice and start reading! These guys will skull **** you till you run away! I'm amazed you haven't gotten this yet!

Everything you need to know for what you want is already been written. Your setup isn't crazy or special.
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Old 12-02-2010, 05:40 AM   #5
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Downpipe depends on your manifold.

Fuel: walbro pump 190lph High pressure pump, your rail is fine

Get a megasquirt, dont look back

Read this twelve times: https://www.miataturbo.net/diy-turbo-discussion-14/diy-faq-all-your-answers-one-big-post-4288/

start with 440cc inj if you arent using a RRFPR inline with your fuel system. If so, use 305cc supra injectors and tune accordingly.

goodluck, bye
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Old 12-02-2010, 12:11 PM   #6
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Manage: Megaskeet or AEM EMS
Injectors: 400+
Downpipe: Get one made cheap ***.
Sexuality: Just accept your man-butt seeking nature.
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Old 12-02-2010, 12:17 PM   #7
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Originally Posted by kotomile View Post
We'd need to know what kind of manifold you have to give any input on downpipe. Pictures are a good start.

You say 6-8 pounds now... lol. You'll want more.

Injectors - anything ~440cc or bigger.

Fuel rail/pump - can remain stock if healthy.

MS - yes, you'll want an EMS.
ill get some pics posted later today as far as ms witch kit would you recommend? http://www.diyautotune.com/catalog/m...tpnp-c-40.html i have the 90 ecu + wiring
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Old 12-02-2010, 12:39 PM   #8
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Have you thought about reading the stickies? Somebody on the forum builds them cheap and will provide a nice base tune map for your injectors. If you read some stickies you will figure it out.
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Old 12-02-2010, 02:24 PM   #9
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I think it would be best if you put a ***** in your vagina.
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Old 12-02-2010, 02:32 PM   #10
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Quote:
Originally Posted by Sam Amporful View Post
Downpipe depends on your manifold.

Fuel: walbro pump 190lph High pressure pump, your rail is fine

Get a megasquirt, dont look back

Read this twelve times: https://www.miataturbo.net/showthread.php?t=4288

start with 440cc inj if you arent using a RRFPR inline with your fuel system. If so, use 305cc supra injectors and tune accordingly.

goodluck, bye
You don't follow instructions very well, do you?

Quote:
Originally Posted by sixshooter View Post
Have you thought about reading the stickies? Somebody on the forum builds them cheap and will provide a nice base tune map for your injectors. If you read some stickies you will figure it out.
Link was already posted. I think he's looking to be spoon fed. JDM style.

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I think it would be best if you put a ***** in your vagina.
+100000
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