i need some turbo advice
12-01-2010, 11:31 PM
#1
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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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12-01-2010, 11:58 PM
#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.
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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12-02-2010, 12:04 AM
#3
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
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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12-02-2010, 03:51 AM
#4
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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
Everything you need to know for what you want is already been written. Your setup isn't crazy or special.
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12-02-2010, 04:40 AM
#5
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
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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12-02-2010, 11:17 AM
#7
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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.
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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12-02-2010, 11:39 AM
#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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12-02-2010, 01:32 PM
#10
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
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
+100000
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