aftermarket standalone VS Stock ecu
01-22-2014, 09:10 PM
#1
Teching In
Thread Starter
Join Date: May 2010
Posts: 32
Likes: 0
Received 0 Likes
on
0 Posts
aftermarket standalone VS Stock ecu I am looking at swapping an LS into my car, and I'm still in the early planning stages. I just happen to have an extra standalone ecu (LINKecu g3 LEM) from an adandon project. What I'm wondering is, if I plan on eventually going to a turbo setup aiming for 600ish HP, am I better off running the standalone ecu or running a stock ecu/harness and tuning with HP tuner? I'm mostly worried about the LINKecu having to run batch fire w/ wasted spark because it only has 4 injector drivers. Will this greatly affect the drivability and performance?
01-23-2014, 11:34 AM
#3
I'm not a professional tuner and this is only my opinion based on my experience...
I like the factory PCM's because they are incredibly capable AND have the ability to control the transmission, not to mention fans and a whole bunch of other cool stuff for a street car.
I have HP Tuners and I've been using it on my cars for a few years and for the money it's hard to beat a factory PCM. I've seen several people using them on some high horsepower builds with no issues. I know at least one person using the flex fuel option to allow them to change fuels on the fly and I have seen and know of several high power turbo cars running them.
The only limit I'm aware of is you run out of spark map at 8000 RPM and a 3 bar OS is the highest I'm aware of available from HP Tuners.
So if you plan on turning more than 8000 RPM (why?) or plan on running more than around 44 pounds of boost (WTF?), you'll it a wall within the stock PCM's capabilities. I'm sure there are other limits but those are at the top of my head.
I like the factory PCM's because they are incredibly capable AND have the ability to control the transmission, not to mention fans and a whole bunch of other cool stuff for a street car.
I have HP Tuners and I've been using it on my cars for a few years and for the money it's hard to beat a factory PCM. I've seen several people using them on some high horsepower builds with no issues. I know at least one person using the flex fuel option to allow them to change fuels on the fly and I have seen and know of several high power turbo cars running them.
The only limit I'm aware of is you run out of spark map at 8000 RPM and a 3 bar OS is the highest I'm aware of available from HP Tuners.
So if you plan on turning more than 8000 RPM (why?) or plan on running more than around 44 pounds of boost (WTF?), you'll it a wall within the stock PCM's capabilities. I'm sure there are other limits but those are at the top of my head.
01-23-2014, 11:38 AM
#4
"I'm mostly worried about the LINKecu having to run batch fire w/ wasted spark because it only has 4 injector drivers. Will this greatly affect the drivability and performance?"
Nothing wrong with batch firing the injectors. I see no problem with the wasted spark either. I don't think it will greatly affect the drivability or the performance.
I have no knowledge of the LINKecu so I can't help you there.
Nothing wrong with batch firing the injectors. I see no problem with the wasted spark either. I don't think it will greatly affect the drivability or the performance.
I have no knowledge of the LINKecu so I can't help you there.
01-23-2014, 02:25 PM
#5
TECH Regular
iTrader: (2)
Join Date: Dec 2009
Location: Austin Texas
Posts: 414
Likes: 0
Received 0 Likes
on
0 Posts
I would first consider your budjet and see what fits best... then-
I would consider what transmission you are going to be using. If your going to be using electronic controlled trans (4l80e,ect) I would go with the factory PCM.
Im not sure what tuning software runs the LINKecu but I would make sure it has all the controls I need for a boost build.
Depending on if you plan on doing the tuning yourself or having it professionally tuned, I would consider who is going to tune it and what tuning program they are most comfortable with.
Without a doubt I would read everything here- https://sites.google.com/site/sloppywiki/
Matt/Denmah has layed out almost everything that one would need to research when building a DIY LS turbo engine...
I would consider what transmission you are going to be using. If your going to be using electronic controlled trans (4l80e,ect) I would go with the factory PCM.
Im not sure what tuning software runs the LINKecu but I would make sure it has all the controls I need for a boost build.
Depending on if you plan on doing the tuning yourself or having it professionally tuned, I would consider who is going to tune it and what tuning program they are most comfortable with.
Without a doubt I would read everything here- https://sites.google.com/site/sloppywiki/
Matt/Denmah has layed out almost everything that one would need to research when building a DIY LS turbo engine...