DIY Turbo Discussion greddy on a 1.8? homebrew kit?

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Old 10-07-2015 | 08:09 AM
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1991's Avatar
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Default Help me get started

I am getting serious on boosting my 1.6. I'm wondering if I just wanted to do a mild 140-150whp daily driver setup, what would the best bang for the buck route to go?

Some side questions.

1. For 150 would I have to get a stand alone ecu, or could I just get a Adjustable FPR and fuel pump with some rx8 injectors?

2. Would you guys recommend getting a kit, or parting it together.

3. Should I reach beyond for more than 150whp even though I'm on a budget and want reliability. Or will the car become more of a money pit to go for 200?

So far my parts list I can think of is
-Wideband sensor
-MSPNP2 (or not?)
-RX8 Injectors
-Fuel pump
-Turbo kit? (or possibly put one together)

That's where I need your help, what kits are decent for a realitivly cheap price? Or should I part one together, if so what things will I need?

I've searched the forums and google, and can't find anyone looking for lower power goals, seems everyone wants 200 and get's told to have 3-4k sitting around to make it reliable. I don't believe this as I had a friend that turbo'd his miata (although his was the 1.8) and was in it about 1800$ including the ecu, and he made just over 200whp. He used the CXRacing kit. Is that any good? Because if so I might be able to do the same.

I'm a noob though, so please treat me like one and tell me what I need. I plan on getting the ecu, wideband, and injectors first, then after a few months buying boost **** (unless it's not needed for 150). That way I can get a hand on tuning and attempt not to blow it up the first day.
Old 10-07-2015 | 08:17 AM
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Start by not building a turbo setup around a mythical horsepower number.
Next trash the 1.6 and get a 1.8.
Then a kit, FM barebones kit, MK turbo kit. Any number of the bare bones kits. (manifold, turbo, downpipe, charge pipes, IC, oil and cooling solution are just a few items)
Stage1 clutch.
Exhaust.
Injectors. 500+cc
Wideband.
Megasquirt.
Coolant reroute is also a good thing to do too.

I can't believe anyone can even DIY a turbo kit for $1800. Unless you're buying only used ebay garbage.
Old 10-07-2015 | 08:41 AM
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Originally Posted by Erat
Start by not building a turbo setup around a mythical horsepower number.
Next trash the 1.6 and get a 1.8.
Then a kit, FM barebones kit, MK turbo kit. Any number of the bare bones kits. (manifold, turbo, downpipe, charge pipes, IC, oil and cooling solution are just a few items)
Stage1 clutch.
Exhaust.
Injectors. 500+cc
Wideband.
Megasquirt.
Coolant reroute is also a good thing to do too.

I can't believe anyone can even DIY a turbo kit for $1800. Unless you're buying only used ebay garbage.
It is doable, but you have to be able to fab everything yourself. It is not something he could do with the type of questions he he asking. I had less then that invested into my GRM2015 setup when I was planning it. It also took me 10 years of learning miata's to be able to do it at that price, and it would be a far from optimal setup.

$160 wideband
$250 MS1 that you assemble,
$200 turbo
$100 rx injectors
$750 for materials for manifold and downpipe.
$200 for IC
$350 clutch
Old 10-07-2015 | 12:39 PM
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Would you guys recommend just going wideband, MSPNP, and injectors to start, then go turbo? I feel if I go all at once **** will go wrong.

What type of tuning is done on a N/A miata with megasquirt?
Old 10-07-2015 | 12:46 PM
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Absolutely. You'll save many headaches by getting a hang of tuning first.

The same tuning that's done on a turbo Miata? Fuel, spark, AE, idle, and all corrections, etc..
Old 10-07-2015 | 01:05 PM
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I guess I'll need a laptop along with that, any ups or downs with different OS's. Do you use win7/8/10? I'm sure it says on their site, but I'd like to know what people that have been there and done it have to say.
Old 10-07-2015 | 01:37 PM
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I use win8.

I also bought one of those touch screen tablet / laptop Lenovo units. Fantastic for road tuning.
Old 10-07-2015 | 02:01 PM
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I have XP. It works.. slowly, but it works.
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