Miata Turbo Forum - Boost cars, acquire cats.

- DIY Turbo Discussion (https://www.miataturbo.net/diy-turbo-discussion-14/)

- - 7 psi setup (https://www.miataturbo.net/diy-turbo-discussion-14/7-psi-setup-5892/)

What kind of HP or performance can i exspect from this setup..

90 7psi, small intercooler, water injection, 12:1 fmu, stock injectors, i have 1.8's i could use if needed, stock fuel pump, and 10deg timing.

What do you guys think, will this even be an improvement from a NA 1.6?

use the 1.8s and get a 7:1 or 8:1 vortech disk. should be around 160-180rwhp, especially with WI you won't need as much fuel. and FP could use an upgrade to a 190HP, you're pushing it with the stock one.

i could spare either or for a few beans.

Any idea on what my low end performance will be, like from 2-3k? with the 10 degree timing?

Somewhere in here is a collection of everyone's spool rpms. With a large enough exhaust, you will spool in the 2s. I haven't driven my car in so long I forgot, but my GT28 was spooling in the later 2Ks.

And yes, you should notice an improvement. Like going from a Lancer ES to an EVO. Something like that.

sweet... im hoping my quick spooling 13g will get me up to boost fast enuff that my low end is ok

Your low-end torque is certainly not going to suffer at all. Your car will have basically the same power it had before when out of boost, and extra power when in boost.

bripab007 what timing do you run?

I have better bottom end now that I have the turbo (out of boost). I don't know if it was the difference in exhaust, but the dyno showed making power earlier out of boost.

the only reason im worried about the low end is because i will have to pull the timing back to keep the engine from knocking while under boost..

You mentioned setting the timing to 10deg. That is the stock setting.

oh, well im sure that wont work, i was thinking the stock setting was 14, what about timing at 6?

6* is what most people run, but if you get a bipes you can get a lot of response back. I have mine set at 14* base, pulling to 6*.

i plan on gettting a bipes some time down the road... was just wondering what i can exspect from what i have now tho

but you have WI......

i guess i need to read up more on the advantages of WI, im just afraid that im going to have to run my timing so low to keep it from knocking that my car is gonna run like crap untill it gets up to full boost, that would be crappy for daily driving

well get it installed, and run it at a point where it wont knock. and deal with it. then get a bipes and smile.

yeah, i guess thats about all i can do..

I am only pulling 2 degrees with my base timing set at 12 degrees. That is to give you an idea of how well WI works. I am still trying to get the timing totally set, but I think that I can even up the timing a little more. At 7psi, you might have to run 9degrees, maybe even 8. Just throwing in my 2 cents. And by the way, I am only at 5.5psig, and the car is totally transformed. I am getting my wideband here very shortly so I can get the fueling sorted out also to get the most out of this low boost until I figure out what size injectors I want to run. Add a little bit of meth to the mixture and it really livens up the car when in boost. Try setting the Wi to kick on at 3-4psig, that seems to be where the best results are acheived at these lower boost levels. Just my .02 about the WI.

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Thanx for the info.. I plan on going the winshield washer fluid route for my WI, and i have a 150cc nozzle with 80 psi or so of pressure commin to it. I plan on running my 1.8 injectors.. and 8:1 fmu. might try running 6psi boost at first, see how i like that.

are you running a intercooler? you think with the WI, i can get away with not running one?

and as far as the wide band goes, i doubt i will be getting one of those, i have the stock O2 with a home made mixture meter.