Tuning my new to me Link'd 93 Turbo - Miata Turbo Forum -Boost cars, acquire cats.

Welcome to Miataturbo.net   Members

LINK Discussion about the LINK ECU.

LinkBack Thread Tools Search this Thread
Old 12-02-2012, 05:20 PM   #1
Thread Starter
Join Date: Jul 2008
Posts: 6
Total Cats: 1
Default Tuning my new to me Link'd 93 Turbo

Picked up a 93 recently. Turbo charged with a journal bearing turbo on an BEGI era FM manifold and down pipe. NPR intercooler. LINK ECU. RC 440 injectors. Big loud exhaust. 1.8 rear with rx7 clutch lsd etc etc.

The original bottom end was replaced with an automatic block after bending a rod because of a stock injector. At the same time, the head was done up with porting, valve job, and the exhaust cam from the automatic was installed at some point.

8 years ago, this thing was "The SH%T!" lol.

I finally move up to a programable ECU with the LINK and of course it's considered antique at this point. Still, it's much better than my previous, AFPR turbo miata.

Other than very basic fuel tuning, the car was running on the default turbo maps. I've done a lot of fuel tuning in the non-boosted rows since getting it and it runs great. Starts and runs in the cold well. Idles perfectly. Boost control is working relatively well at this point as well.

Still, the response seems soft. I figured it's because the default LINK maps are conservative even for the stock compression ratio so maybe it's REALLY soft for the lower compression pistons in this car? Also, the EGTs both cruising and in boost are higher than they should be.

I've been slowly pushing the timing up across the whole map but I think I'm being too conservative. I've been reading everything I can find online about tuning the link and I've looked at all the timing and fuel maps I can find.

I guess my question is how much more timing does the half a point of compression drop with the dished auto pistons allow? I know no one can just answer that but I'm looking for advice just on overall approach I suppose.

Do I just keep pushing it up until I start to see knock under load and then bring it back down until the knock stops? Is there "too much timing"? Or maybe, do I just turn up the boost because of the low compression ratio?

Sorry for the long post...I'm just excited to be playing with an ECU!
rnorma1 is offline   Reply With Quote
Old 12-02-2012, 06:20 PM   #2
RyanY's Avatar
Join Date: Jul 2011
Location: North Phoenix, AZ
Posts: 28
Total Cats: 3


Tons of good info there on tuning your Link, and how to get the most performance out of it.

If you don't have a wideband O2 sensor, get one - it will enable you to autotune the boosted rows as well as non-boosted.
RyanY is offline   Reply With Quote
Old 12-02-2012, 07:15 PM   #3
Thread Starter
Join Date: Jul 2008
Posts: 6
Total Cats: 1

I have that thanks.

I was actually looking for advice from users.

I suppose my question is more about how to treat a lower compression motor and if there was such thing as "too much timing" other than the problem of detonation.
rnorma1 is offline   Reply With Quote
Old 12-02-2012, 07:51 PM   #4
Elite Member
iTrader: (12)
Join Date: Dec 2006
Location: Taos, New mexico
Posts: 5,659
Total Cats: 225

When you add timing and it stops making power, even if it doesn't knock. That would be "too much timing".
Fireindc is offline   Reply With Quote
Old 03-07-2013, 12:22 AM   #5
Join Date: Apr 2012
Posts: 10
Total Cats: 0

i have a 92 with a fm2 kit and a link and i just went threw a lot of tuning last year. adjusting from the stock 440 cc base maps how much would you say you added in timing in the boosted rows and is your boost target 180 kpa?
skyfox2003 is offline   Reply With Quote

Related Topics
Thread Thread Starter Forum Replies Last Post
Garrett Turbo, 1.8 Oil Pan, & Misc. Stuff nbdooey Miata parts for sale/trade 8 03-21-2016 10:53 PM
Another Cast Manifold Corky Bell Prefabbed Turbo Kits 17 10-02-2015 09:28 PM
"Chimney Ethanol" E100 MiataGarage Engine Performance 5 09-29-2015 11:04 PM

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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 On
Pingbacks are On
Refbacks are On

All times are GMT -4. The time now is 04:44 AM.