Miata Turbo Forum - Boost cars, acquire cats.
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Miata Turbo Forum - Boost cars, acquire cats. (https://www.miataturbo.net/)
-   DIY Turbo Discussion (https://www.miataturbo.net/diy-turbo-discussion-14/)
-   -   put the 550's in!!! (https://www.miataturbo.net/diy-turbo-discussion-14/put-550s-13079/)

sweetmeatz 10-09-2007 08:18 PM
Originally Posted by SloS13 (Post 161191)
sweetmeats - have you had any luck with the O2 signal modifier in the FIC software. I swear I tried everythign yesterday but it kept wanting to go to the high 14's in boost. The FIC manual SUCKS. I tried offset with -0.3 in all the boost cells as well as....i forget, but I think I tried about everything.

I'll just keep running without my o2 plugged in until I can get this thing figured out.
look at the o2 map that was in the file i sent you befor you have to put it in % mode and 0.3v for when in and just befor boost i havent played with the beta version yet but i guess it lets you do more with the 02 map

sweetmeatz 10-09-2007 08:23 PM
Originally Posted by akaryrye (Post 161111)
nice banana rod and gunness catch can ... whats up with your throttle body pipe? oh and why the hell do you have zipties holding the AFM on??

Otherwise looks pretty cool. Green valve cover is definitely unique.
zip ties are how we do it here in the great white north!!!..hahah

i ran out of clamps and thats wht i had at the time so thats wht i used they seem to hold up well haha..

i dont know whts wrong with a 2 1/2" 90 degree elbow for the TB its was cheap transport shops have everything

mtncrvr 10-09-2007 08:38 PM
Originally Posted by Al Hounos (Post 159575)
I thought the rods on an NB engine would bend after 12 or so psi?

+1 Bell advises not running over ~12 on stock internals on NB (just a fyi).. All depends on how long you want the motor to last and how good your tune is :-)

mtncrvr 10-09-2007 08:41 PM
How's ur idle on the 550's ? There's a somewhat religious arguemnt going on w/my friend and I over idle issues on 550s. Mine idles a little on the rough side till fully warmed up (though makes it sound evil) but usually is not an issue.. (I have no pulsewidth control so fine tuning idle = non existant, I can change fuel/timing but again with big injectors pulsewidth control is your friend).

sv650_ck 10-09-2007 11:24 PM
Originally Posted by SloS13 (Post 161191)
sweetmeats - have you had any luck with the O2 signal modifier in the FIC software. I swear I tried everythign yesterday but it kept wanting to go to the high 14's in boost. The FIC manual SUCKS. I tried offset with -0.3 in all the boost cells as well as....i forget, but I think I tried about everything.

I'll just keep running without my o2 plugged in until I can get this thing figured out.
Did you try the "voltage mode"? Looks like you build a table from around 13.5PSIa (right before boost) to your max boost with RPM's from 0 to ~5000rpm (closed loop for NBs). Set all cell values to a lean condition ~.3V.

sweetmeatz 10-10-2007 12:09 AM
i thought it was the 99-00 that had issues with the higher boost???...i have a set of B6T rods and im working on geting a set of BP05 pistons cryotreated.. my AFR under boost right now seems to stay around the 11.6-12.2 range ... im also thinking of running a pre 99 head ported with +1mm valves and a nice set of cams ...


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