It runs! But not well.. Input appreciated. - Miata Turbo Forum - Boost cars, acquire cats.

MEGAsquirt A place to collectively sort out this megasquirt gizmo
Sponsored by:
Sponsored by:

It runs! But not well.. Input appreciated.

Old 08-30-2015, 12:03 AM
  #1  
Junior Member
Thread Starter
iTrader: (1)
 
Join Date: Dec 2009
Location: Knoxville, TN
Posts: 265
Total Cats: 0
Default It runs! But not well.. Input appreciated.

Hey gang,

My MSM Swapped 99 lives! But doesn't exactly run well yet. I would love some input. As it stands, it is pig rich at idle, spitting raw fuel out the exhaust.
It has almost no power from 1k-4k RPMs. From 4-5k It seems to be trying to drown itself. However from 5k on, IF you can get to 5k.. The boost kicks in and WOOSH!

I finally got everything working long enough to get one short session of data logging in.

I have attached both my tune and my log. I would appreciate any help I can get. I will happily admit, I am a COMPLETE newb at this. I am trying to learn it... But it is going slow.

Thanks!
Randy
Attached Files
File Type: msl
2015-08-29_15.00.47.msl (1.35 MB, 109 views)
File Type: msq
Ryu Runs.msq (112.1 KB, 106 views)
viriiguy is offline  
Old 08-30-2015, 12:16 AM
  #2  
Elite Member
iTrader: (5)
 
Join Date: Oct 2007
Location: Canton, Ga
Posts: 1,962
Total Cats: 43
Default

Did you set the Req fuel for your injectors?

Do you have a wideband?

Did you set your base timing?

Took a look at your VE and timing tables, looks like you grabbed a tuned one from somebody. did not bother with the log... I don't do much boost stuff so wont comment on timing there, but first look at where your car idles. Fire it up, open tunerstudio and look at your VE table, It should be idling in the lower left of the table, around 30ish KPA. If its much higher than 30 you may have a vac leak or something, but if not start lowering the cells there by 5-6 at a time until idle leans out.
Stealth97 is offline  
Old 08-30-2015, 02:00 PM
  #3  
Junior Member
Thread Starter
iTrader: (1)
 
Join Date: Dec 2009
Location: Knoxville, TN
Posts: 265
Total Cats: 0
Default

I took the base 99 tune from DIYPNP and put the stock MSM Fuel and timing tables into it.
Brett Willett then logged in to my laptop and got it so it idles pretty good and will drive. But yea, I am still a long way from road ready.
viriiguy is offline  
Old 08-30-2015, 03:09 PM
  #4  
Boosting since 1984
iTrader: (1)
 
stefanst's Avatar
 
Join Date: Sep 2011
Location: Lambertville, NJ
Posts: 1,204
Total Cats: 70
Default

Looks like all you need to do is tune it. Your AFRs are waaaaay off.

One of the many secrets to tuning is to do things slowly. Your throttle input is sudden and all over the place. At this point your car is a virgin. Treat her gently and don't stomp on it.

Once you got your fuel tuned, deal with accel enrichment.
stefanst is offline  
Old 08-30-2015, 04:54 PM
  #5  
Junior Member
Thread Starter
iTrader: (1)
 
Join Date: Dec 2009
Location: Knoxville, TN
Posts: 265
Total Cats: 0
Default

Very good point!
To be 100% honest, I just got so excited actually being able to drive it yesterday. I has only been 5 months.
viriiguy is offline  
Old 08-30-2015, 10:53 PM
  #6  
Newb
 
Join Date: Dec 2011
Posts: 14
Total Cats: 2
Default

Be very careful when you are under boost.

Your ignition table is very advanced.

I have an MSM with an MS3 and I get knock if I exceed 15 degrees at 150kpa in the peak torque region (3400-4800 RPM).
Also, your AFR table only goes to 100kpa, you need to handle AFRs under boost (> 100kpa) which will need to be lower than the values you have currently in the 100kpa row.

You mentioned that you modified a base DIYPNP and added the stock MSM fuel and timing tables.
Where did you get the MSM tables from - are they from logs generated while running an OEM ECU?
VcrMiata is offline  
Old 08-31-2015, 12:20 AM
  #7  
Junior Member
Thread Starter
iTrader: (1)
 
Join Date: Dec 2009
Location: Knoxville, TN
Posts: 265
Total Cats: 0
Default

I got the stock MSM tune from Glooba here... Megasquirt tunes to get you started.

I have a buddy coming over this week to look into my tune.
viriiguy is offline  
Old 09-02-2015, 10:42 PM
  #8  
Elite Member
iTrader: (6)
 
Join Date: May 2011
Location: Albuquerque, NM
Posts: 1,657
Total Cats: 64
Default

Us TN tuning noobs need to bring someone with food and booze to hold a tuning day. Slap us around a little an show us what for.
TorqueZombie is offline  
Old 09-03-2015, 12:08 AM
  #9  
Junior Member
Thread Starter
iTrader: (1)
 
Join Date: Dec 2009
Location: Knoxville, TN
Posts: 265
Total Cats: 0
Default

Originally Posted by TorqueZombie View Post
Us TN tuning noobs need to bring someone with food and booze to hold a tuning day. Slap us around a little an show us what for.
This sounds like a plan
I have been plying my buddy with a $150 bottle of Scotch
viriiguy is offline  
Old 09-03-2015, 09:36 PM
  #10  
Elite Member
iTrader: (6)
 
Join Date: May 2011
Location: Albuquerque, NM
Posts: 1,657
Total Cats: 64
Default

If anyone volunteers I'll toss in some whiskey and food.
TorqueZombie is offline  
Old 09-04-2015, 07:28 PM
  #11  
Junior Member
Thread Starter
iTrader: (1)
 
Join Date: Dec 2009
Location: Knoxville, TN
Posts: 265
Total Cats: 0
Default

Brett Willett Has been doing my tuning remotely for the last few days. However, we are on hold for now, until I figure out why the freaking IAT is not working. Matt Cramer from DIYPNP is working with me on that right now.
viriiguy is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Full_Tilt_Boogie
Build Threads
63
08-09-2018 07:54 PM
90 Turbo
MEGAsquirt
19
10-19-2015 04:23 PM
Trent
WTB
2
10-01-2015 01:15 PM
The Gleas
MEGAsquirt
3
10-01-2015 10:30 AM


Thread Tools
Search this Thread
Quick Reply: It runs! But not well.. Input appreciated.


Archive Advertising Cookie Policy Privacy Statement Terms of Service

© 2018 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.