Noob to this, not to that... - Page 4 - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


Prefabbed Turbo Kits A place to discuss prefabricated turbo kits on the market
Sponsored by:
Sponsored by:

Reply
 
 
 
LinkBack Thread Tools
Old 06-19-2015, 01:20 PM   #61
Hug Life
iTrader: (3)
 
Monk's Avatar
 
Join Date: Apr 2014
Location: Huntington, Indiana
Posts: 2,798
Total Cats: 492
Default

Quote:
Originally Posted by satisfied View Post

Regarding the 205 vs 225 comparison - the tire width in relation to wheel width has to be taken into account. On an 8 inch rim, 205/50 will create more grip than 225/45. The 225/45 needs a 9 inch rim to create max grip. The reason is the flex and squirm in the sidewall. Putting just a slight stretch stabilizes the contact patch. If the tire is wider than the wheel, it can deflect and deform more laterally, reducing overall grip. Similar to backpacking with loose stuff shifting around in the pack - it throws you off balance.
That's basically it in a nutshell. It's been covered a few times on this site. Check out some of the tire threads... Lemme find you a good one.
Monk is offline   Reply With Quote
Old 06-19-2015, 01:23 PM   #62
Junior Member
Thread Starter
 
Join Date: May 2015
Posts: 98
Total Cats: -33
Default

Quote:
Originally Posted by Monk View Post
That's basically it in a nutshell. It's been covered a few times on this site. Check out some of the tire threads... Lemme find you a good one.

Then this is a good thing. I want some of those new flow formed wheels on the market, and if performance says so then we can do this. Not now, but next season. This MSPNP2 and WBo2 is going to kill my budget for a while.
satisfied is offline   Reply With Quote
Old 06-19-2015, 01:25 PM   #63
Hug Life
iTrader: (3)
 
Monk's Avatar
 
Join Date: Apr 2014
Location: Huntington, Indiana
Posts: 2,798
Total Cats: 492
Default

Monk is offline   Reply With Quote
Old 06-19-2015, 04:44 PM   #64
Moderator
iTrader: (11)
 
sixshooter's Avatar
 
Join Date: Nov 2008
Location: Tampa, Florida
Posts: 15,633
Total Cats: 1,559
Default

When you add a little bit more power you will need significantly better compound brake pads. We have pretty enlightening threads on that subject as well.
sixshooter is offline   Reply With Quote
Old 06-21-2015, 02:03 PM   #65
Junior Member
Thread Starter
 
Join Date: May 2015
Posts: 98
Total Cats: -33
Default

Quote:
Originally Posted by sixshooter View Post
When you add a little bit more power you will need significantly better compound brake pads. We have pretty enlightening threads on that subject as well.
I'll do some reading. Also got my torsen in properly yesterday. tested a launch on stock 185 all seasons. Left a 5' long "11" in the tarmac. Grip was fantastic, I know it's stock power-wise, but I'm pretty sure you guys are right, and a properly sorted torsen, with 205's will be adequate to handle a mildly boosted miata. So next season I'll drop the width down to 205 on my current 15x7.5's unless I go for some new 15x8's.
satisfied is offline   Reply With Quote
Old 09-13-2015, 02:59 AM   #66
Junior Member
Thread Starter
 
Join Date: May 2015
Posts: 98
Total Cats: -33
Default

So after months of fighting with BEGI finally got all my parts together.

Lessons learned.

Turboing a miata properly is a $5k+ endeavor. No shortcuts, no work arounds, no "i'll upgrade laters" Do it all at once, and do it right.

Don't buy an AEM UEGO.

First baseline tune, didn't work at all, AEM AFR was VASTLY DIFFERENT from what Tunerstudio told me it was. I did something to the target input values vs AFR reading that took me about 4 hours to figure out after my buddy with a stupid awesome vvt turbo couldn't figure out why my AFR's were so fucky.



So on my Rev built MSPNP2 I got a new baseline tune (thanks rev!) on there after all the mods were "done" and it idled fine; died upon even THINKING about applying throttle, but the AFR reading on the Tunerstudio would only go between 12.1 and 13.6 despite the actual AFR's being anywhere from 10.9 to 17.3 (beyond 17.3 I just get 3 dashes.)

I read and read and realized the poor AFR reading was tricking the MS into thinking my AFR was good under all variables (kPa's changing and whatnot) and therefore not adjusting the fuel accordingly!

So I went back into the AFR calibration menu and saw that there was NO WIDEBAND SELECTED! (How in the hell?) so I selected custom WB (as there's NO OPTION IN MSPNP2 FOR THE AEM UEGO WITH THE LSU 4.9 BOSCH SENSOR [the other presets don't work either!]) and I can't figure out what I did last time to make her read right!!!

So I lost idle again. Help?



I don't know how to add my signature but it has my mods list in it...

I am a radar technician who specializes in micro, miniature electronics repair, I have my AEM UEGO wired 3" beyond the harness that goes directly to the MSPNP2 as everyone said to get the ground as close as possible to the MS's ground. I figured electronically THAT'S AS CLOSE AS I CAN GET. They are semi-stripped, wire wrapped, soldered and heatshrunk over. I really doubt it's my wiring, unless you REALLY insist.

I'll just copy/paste my signature here...

1991 Mazda FeelYata MXcry
BEGI S shanghai; RX8 420cc injectors; NO TPMS; Rev built MSPNP2; Boost gauge; AEM UEGO; cxracing FMIC; greddy knockoff BOV vented to atmosphere (**** you nature!); AC delete; PS delete; R package steering rack; still not working....
satisfied is offline   Reply With Quote
Old 09-13-2015, 09:08 AM   #67
Senior Member
iTrader: (2)
 
Join Date: Mar 2014
Location: Meridian, Mississippi
Posts: 637
Total Cats: 42
Default

Quote:
Originally Posted by satisfied View Post
However I inherited this setup from a friend who is pretty big time in racing, it was super cheap, and so far it works. When the tires go, I'll re-evaluate tire selection for next season.
So, he upgraded to 15 x 9's and sold you his 15 x 7.5's???

The wide tire narrow rim works fine in a strait line, so for drag racing the weight savings make sense, but anything involving cornering you are better off with the wider wheels. I agree that budget constraints may keep you on this setup for now, just keep it in mind as a future upgrade... like your friend who sold you the set you have now

You can find the voltage vs A/F value table for your sensor on line, and manually input the upper and lower values into the custom calibration for the wide band... it may not be perfect though. Mine has about a .3 offset from what the gauge on my A/F meter reads with the supplied values inputted into my MS3, so I applied a little Kentucky windage to the values to make the MS3 readings match my A/F gauge.

Good luck,
Keith
Twodoor is offline   Reply With Quote
Old 09-13-2015, 03:04 PM   #68
Junior Member
Thread Starter
 
Join Date: May 2015
Posts: 98
Total Cats: -33
Default

Quote:
Originally Posted by Twodoor View Post
So, he upgraded to 15 x 9's and sold you his 15 x 7.5's???

The wide tire narrow rim works fine in a strait line, so for drag racing the weight savings make sense, but anything involving cornering you are better off with the wider wheels. I agree that budget constraints may keep you on this setup for now, just keep it in mind as a future upgrade... like your friend who sold you the set you have now

You can find the voltage vs A/F value table for your sensor on line, and manually input the upper and lower values into the custom calibration for the wide band... it may not be perfect though. Mine has about a .3 offset from what the gauge on my A/F meter reads with the supplied values inputted into my MS3, so I applied a little Kentucky windage to the values to make the MS3 readings match my A/F gauge.

Good luck,
Keith
No, actually SHE just took 3rd at nationals in her class on another 15x7.5 225 width wheel/tire setup, this time using RS3's. That's an argument for another day though.

The voltage VS AFR readout calibration table AEM and everyone else provides doesn't work. 0v = 10.00 : 4.99v = 19.98.

When I input that it will read 23.46 in tunerstudio ALL DAY, DUMP FUEL into the engine and spew black smoke.

When I tried removing the decimal on the SECOND AFR range so inputting "1998" instead of "19.98" it actually went down to 10.10 but was also CONSTANTLY sitting at 10.10.

Then I tried ******* with the voltage ranges.... It worked the first time I tried this back before I had this better baseline tune, but I can't get it down! It just stays off. Not just off, but entirely frozen in place at an inaccurate value. It's useless to me to try to tune off these values, and the fuel spraying out of my exhaust can't be a good sign.

Anyone have anything?
satisfied is offline   Reply With Quote
Old 09-13-2015, 08:40 PM   #69
Junior Member
Thread Starter
 
Join Date: May 2015
Posts: 98
Total Cats: -33
Default

Redid all of the wiring, checked from the sensor forward. It's all good. Remade solder connections, and retested. Same ****. My current readings are 0v = 5.8AFR 4.98v = 1700 AFR. That's right, 1700 NO DECIMAL.. Adding the decimal makes it read HIGH like 26.7 high, and frozen. I have NO ******* CLUE what the issue is. As of now, I can only get it to read between 11.1-13.00 although the ACTUAL AFR on the gauge can shoot between 10.6 and 17.3 then die.

What the **** is going on here?

I can only work on the car on weekends because I effectively work 16-18 hours a day.

This is supposed to be MSPNP2 not MS pull your hair out, smash car with hammer, buy mazdaspeed miata instead 2.
satisfied is offline   Reply With Quote
Old 09-13-2015, 08:48 PM   #70
Elite Member
iTrader: (6)
 
Join Date: Feb 2013
Location: Staunton, Va
Posts: 2,398
Total Cats: 200
Default

There are threads about the issue you are having. It does have to do with where you place the decimal, if I remember correctly. I think you may have had it right in an earlier post, When it read 10.0.all the time. I think it's so damn rich that all you get is a 10.0 reading. You said it spits fuel out of the tail pipe. Re check your req.fuel settings. / Injector settings . Tuner studio has a severely steep learning curve.
ryansmoneypit is offline   Reply With Quote
Old 09-13-2015, 09:26 PM   #71
Moderator
iTrader: (11)
 
sixshooter's Avatar
 
Join Date: Nov 2008
Location: Tampa, Florida
Posts: 15,633
Total Cats: 1,559
Default Noob to this, not to that...

I'm using the "hated" lc-1 so I've got nothing for you but lulz. My AEM uego is in a box.
sixshooter is offline   Reply With Quote
Old 09-13-2015, 09:46 PM   #72
Junior Member
Thread Starter
 
Join Date: May 2015
Posts: 98
Total Cats: -33
Default

So you're saying the AEM gauge is incorrect? I'm taking the output of the actual AEM gauge as correct and tunerstudio is the problem.
satisfied is offline   Reply With Quote
Old 09-13-2015, 10:31 PM   #73
Junior Member
Thread Starter
 
Join Date: May 2015
Posts: 98
Total Cats: -33
Default

Well, giving up for today. Hopefully brain rev or curly comes through with some sort of suggested course of action.
satisfied is offline   Reply With Quote
Old 09-14-2015, 12:33 AM   #74
Newb
 
Join Date: Oct 2013
Posts: 10
Total Cats: 1
Default

+1 for getting it figured out. I need my garage back.

Can I buy that MS yet?
99blkx is offline   Reply With Quote
Old 09-14-2015, 12:37 AM   #75
Junior Member
Thread Starter
 
Join Date: May 2015
Posts: 98
Total Cats: -33
Default

I'm going to throw a meter on the UEGO next weekend and see if the analog output is going anywhere, or if it's off, AEM packaged the wrong sensor or any other weird *** thing that only ever happens to me. The wiring is all good, I just didn't bring my fluke today. I will on Saturday next week and see what happens, and maybe bring a spare UEGO in its entirety and see what the **** is happening. If that goes nowhere and no one has anything I'm just going to sell the whole MS setup and rock the RRFPR, there's no way the drivability can be any worse than yknow... Not moving at all.
satisfied is offline   Reply With Quote
Old 09-14-2015, 02:00 AM   #76
Newb
 
Join Date: Oct 2013
Posts: 10
Total Cats: 1
Default

Ian is willing to trade for a MTX-L maybe...
99blkx is offline   Reply With Quote
Old 09-14-2015, 02:01 PM   #77
Elite Member
iTrader: (6)
 
Join Date: Feb 2013
Location: Staunton, Va
Posts: 2,398
Total Cats: 200
Default

It's not the ms.
ryansmoneypit is offline   Reply With Quote
Old 09-14-2015, 02:02 PM   #78
Murderator
iTrader: (76)
 
18psi's Avatar
 
Join Date: Apr 2008
Posts: 36,165
Total Cats: 2,573
Default

Quote:
Originally Posted by satisfied View Post
I'm going to throw a meter on the UEGO next weekend and see if the analog output is going anywhere, or if it's off, AEM packaged the wrong sensor or any other weird *** thing that only ever happens to me. The wiring is all good, I just didn't bring my fluke today. I will on Saturday next week and see what happens, and maybe bring a spare UEGO in its entirety and see what the **** is happening. If that goes nowhere and no one has anything I'm just going to sell the whole MS setup and rock the RRFPR, there's no way the drivability can be any worse than yknow... Not moving at all.
lol
18psi is offline   Reply With Quote
Old 09-14-2015, 03:12 PM   #79
Junior Member
Thread Starter
 
Join Date: May 2015
Posts: 98
Total Cats: -33
Default

Quote:
Originally Posted by 99blkx View Post
Ian is willing to trade for a MTX-L maybe...

Can you check the harness for a yellow wire? Should be pure yellow, apparently the WB02 out (white wire) needs to be spliced there, NOT on where the old narrow band went.
satisfied is offline   Reply With Quote
Old 09-14-2015, 03:24 PM   #80
Elite Member
iTrader: (6)
 
Join Date: Feb 2013
Location: Staunton, Va
Posts: 2,398
Total Cats: 200
Default

I hear that even people fleeing Turkey are using LC1 and mtx units.
ryansmoneypit is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
96 montego blue nOOb from Milwaukee Squiblez Meet and Greet 1 09-23-2015 02:50 AM
VE analyze and Autotune seems funny (noob) TorqueZombie MEGAsquirt 64 09-18-2015 06:03 PM
Mystery Engine Trouble. Halp, mt.net! vehicular General Miata Chat 12 09-14-2015 04:17 PM
Compression test results Colipto General Miata Chat 3 09-11-2015 02:44 PM
timing marks don't match crank pulley gfeeley Engine Performance 10 09-04-2015 06:36 PM


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 04:01 AM.