My MSPNP 90-93 Thread - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


MEGAsquirt A place to collectively sort out this megasquirt gizmo

Reply
 
 
 
LinkBack Thread Tools
Old 04-19-2008, 05:52 PM   #1
Junior Member
Thread Starter
iTrader: (3)
 
Join Date: Aug 2007
Location: Panama City, FL.
Posts: 336
Total Cats: 0
Default My MSPNP 90-93 Thread

well i decided instead of posting thread and thread after thread that i would juts make one for all of my ?'s.

can some one look at my current MAP that i created with MegaLogVeiwer

this is basically the only way my car will run ok, kinda......

but around 3,500 - 4,000 it struggles....

http://www.mediafire.com/?4byjnjufyjm

Last edited by 01TurboMiata; 04-19-2008 at 06:08 PM.
01TurboMiata is offline   Reply With Quote
Old 04-19-2008, 06:09 PM   #2
Supporting Vendor
iTrader: (31)
 
Savington's Avatar
 
Join Date: Nov 2006
Location: Sunnyvale, CA
Posts: 14,362
Total Cats: 1,323
Default

Zip your MSQ up and post it as an attachment here. I don't want to go through some spam-filled 3rd party host. :P Also, tell us more about how it's running shitty. Won't idle, bucks under load, falls flat on its face above X rpm or X boost, etc.
Savington is offline   Reply With Quote
Old 04-19-2008, 07:57 PM   #3
Junior Member
Thread Starter
iTrader: (3)
 
Join Date: Aug 2007
Location: Panama City, FL.
Posts: 336
Total Cats: 0
Default

it runs fine till about 3 or 4 grand, then it seems to bogg and buck,

also the wideband sits and 10.1 at idle and the narrow band sits at 20.00 ...... thinking because there is to much fuel on the narrowband and it cant read.......... but i went through megalogveiwer about 5 times and this is what i got, i think my timing may be off, i checked it last night and it was fine and on the dot but i cant see the timing now (its to bright outside and my timing light wont show)

any ideas?
Attached Files
File Type: zip tune 1.zip (5.8 KB, 40 views)
01TurboMiata is offline   Reply With Quote
Old 04-19-2008, 10:38 PM   #4
Junior Member
Thread Starter
iTrader: (3)
 
Join Date: Aug 2007
Location: Panama City, FL.
Posts: 336
Total Cats: 0
Default !!!!!!!!!!!!!!!!!!!!!

ok timed the car......... 10 degree's but when its timed the car will not rev up it just tries and boggs...... but the only way i can get the car to rev is if i advance the timing, mmmmmmmm about 20 degree's!!!!! WTF ?

is it possible that MegaSquirt did something wrong? its a PNP......

i know there is no way the CAS is 180 degree's off, like what could happen to a DSM, the CAS only goes on one way on a 90-93 miata........
01TurboMiata is offline   Reply With Quote
Old 04-19-2008, 11:33 PM   #5
Senior Member
iTrader: (4)
 
Join Date: Aug 2007
Location: Guam (U.S Terr.)
Posts: 786
Total Cats: -2
Default

Well if you got your timing belt changed. Check it like Savington did.
mike_671 is offline   Reply With Quote
Old 04-20-2008, 12:09 AM   #6
Junior Member
Thread Starter
iTrader: (3)
 
Join Date: Aug 2007
Location: Panama City, FL.
Posts: 336
Total Cats: 0
Default

timing belt was put on by Flyin Miata when the engine was built...........

its good.
01TurboMiata is offline   Reply With Quote
Old 04-20-2008, 12:17 AM   #7
Junior Member
Thread Starter
iTrader: (3)
 
Join Date: Aug 2007
Location: Panama City, FL.
Posts: 336
Total Cats: 0
Default

can anyone help me?

i tried changing the CAS and still no luck.

i just find it strange that the car works fine if the timing is advanced 20 degree's, but i dont like the idea and i dont beleive thats safe.........
01TurboMiata is offline   Reply With Quote
Old 04-20-2008, 12:18 AM   #8
Elite Member
iTrader: (15)
 
Join Date: Sep 2007
Location: Incline Village, NV
Posts: 2,073
Total Cats: 5
Default

did you get the mapdaddy or vtps mod done? All stock motor for now? stock injectors? I had the vtps and mapdaddy mod done to mine and didnt change something in megatune which led to similar issues.
thesnowboarder is offline   Reply With Quote
Old 04-20-2008, 12:19 AM   #9
Senior Member
 
Join Date: Dec 2004
Location: Brisbane, Australia
Posts: 1,272
Total Cats: 32
Default

Did you set your trigger angle?
timk is offline   Reply With Quote
Old 04-20-2008, 12:20 AM   #10
Junior Member
Thread Starter
iTrader: (3)
 
Join Date: Aug 2007
Location: Panama City, FL.
Posts: 336
Total Cats: 0
Default

i have VTPS done..... (yes i calibrated the TPS)

have 450cc injectors, yes i did change the REQ. fuel
deleted AFM
turbocharged.
01TurboMiata is offline   Reply With Quote
Old 04-20-2008, 12:21 AM   #11
Junior Member
Thread Starter
iTrader: (3)
 
Join Date: Aug 2007
Location: Panama City, FL.
Posts: 336
Total Cats: 0
Default

yes
01TurboMiata is offline   Reply With Quote
Old 04-20-2008, 03:46 AM   #12
Supporting Vendor
iTrader: (31)
 
Savington's Avatar
 
Join Date: Nov 2006
Location: Sunnyvale, CA
Posts: 14,362
Total Cats: 1,323
Default

What impedance are the injectors? Are they DSM 450s? Aren't those low-imps? The MSPNP won't run low-imp injectors without additional grounding or a flyover board (or something).
Savington is offline   Reply With Quote
Old 04-20-2008, 12:43 PM   #13
Junior Member
Thread Starter
iTrader: (3)
 
Join Date: Aug 2007
Location: Panama City, FL.
Posts: 336
Total Cats: 0
Default

have a resistor pack.......
01TurboMiata is offline   Reply With Quote
Old 04-20-2008, 12:44 PM   #14
Junior Member
Thread Starter
iTrader: (3)
 
Join Date: Aug 2007
Location: Panama City, FL.
Posts: 336
Total Cats: 0
Default

and it does the same thing with the stock injectors, tried swapping.
01TurboMiata is offline   Reply With Quote
Old 04-20-2008, 01:43 PM   #15
Junior Member
Thread Starter
iTrader: (3)
 
Join Date: Aug 2007
Location: Panama City, FL.
Posts: 336
Total Cats: 0
Default

hello? can anyone help me jesus,

i'll go over this again.

I have spark
I have fuel
I have all the adjustment's correct
I've tried to change the CAS
I have timed the car
When the car is timed at 10 degree's it wont rev up past 1,500 RPM, basically it ascts way out of time...... When trying to rev the car you can hear the pressure comming back through the turbo because it has no where to go, once again like the timing is incorrect.
The only way the car is driveable at all is if the timing is advanced 20-25 degree's, when it is advanced the car drives like a normal car other than a bucking or bogging issue between 3,000 and 4,000 RPM.
I dont drive the car due to the fact that 25 degree's of timing advance from the correct timing doesn't sounds safe to me.

Does anyone know what my problem may be?
Is something incorrect in the MSPNP for it to do this?

Thank you.

Joey.
01TurboMiata is offline   Reply With Quote
Old 04-20-2008, 02:05 PM   #16
Ben
Supporting Vendor
iTrader: (33)
 
Ben's Avatar
 
Join Date: Jul 2006
Location: atlanta-ish
Posts: 12,689
Total Cats: 99
Default

You're not obnoxious or anything. Did you read the manual and set the timing in exactly the manner described therein?

Why on earth are you running a WB and NB simultaneously with a MS? Makes me further believe that you didn't bother to read the manual.
Ben is offline   Reply With Quote
Old 04-20-2008, 02:12 PM   #17
Junior Member
Thread Starter
iTrader: (3)
 
Join Date: Aug 2007
Location: Panama City, FL.
Posts: 336
Total Cats: 0
Default

yes i read the manual
yes i did it correctly and im not running both, i only connected the NB for a moment to see if my wideband was even reading correclty do to the fact it hasnt moved from 10.1........
01TurboMiata is offline   Reply With Quote
Old 04-20-2008, 03:19 PM   #18
Junior Member
iTrader: (4)
 
Join Date: Oct 2006
Location: Alberta Canada
Posts: 228
Total Cats: 5
Default

You certainly sound over fueled, whats your fuel pressure? Is it possible the fuel regulator is dumping fuel through the vacuum port? Can you get us a vacuum reading at idle and at 3000 rpm no load? Whats the WB say at 3000 rpm no load?

I suppose FM just cant do a timing belt incorrectly, they are infallible! Id be checking that!

Does the timing advance when you rev the motor?

Is it possible to have something blocking the exhaust? A quick check would be to run it with the WB out of the hole, or even put a pressure guage on the bung to see if you have abnormal packpressure.

IIRC there are 2 marks on the crank pulley, are you sure you are on the right one?

If all this doesnt help, lets hear a compression reading.

Ron
Alta_Racer is offline   Reply With Quote
Old 04-20-2008, 03:33 PM   #19
Junior Member
Thread Starter
iTrader: (3)
 
Join Date: Aug 2007
Location: Panama City, FL.
Posts: 336
Total Cats: 0
Default

Did you read my post at all ?

It's a 91 = means 1 timing mark
There is no fuel leaking through the vaccum line
The car wont rev past 1,5000 rpm when its timed but if the timing is advanced 25 degrees ( the base timing ) it will rev through all RPM's
It's a built engine with less that 2,000 miles on it im sure its fine.....
The exhaust isnt clogged.
01TurboMiata is offline   Reply With Quote
Old 04-20-2008, 03:41 PM   #20
Junior Member
iTrader: (4)
 
Join Date: Oct 2006
Location: Alberta Canada
Posts: 228
Total Cats: 5
Default

Glad I was able to help.

My questions all have merit, the answers would help me to help you.

Your welcome
Alta_Racer is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
OTS Bilstein to motorsports ASN conversion stoves Suspension, Brakes, Drivetrain 5 04-21-2016 04:00 PM
Going back to stock. Need some 1.6 parts. Trent WTB 2 10-01-2015 01:15 PM
Leaky Wilwoods mx592 Suspension, Brakes, Drivetrain 1 10-01-2015 01:45 AM


Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 06:58 AM.