I have the SCT Xcalb2 and it has been nothing but junk, i have fully built motor DCR oil system, built bottom end, head work, crane 16, 60-1 turbo, 750cc inj, return, bottle neckfix, dual 255 walbros, and the car will run 10 flat till about 4500rpm and the car goes lean bad high 12s and 13s when start getting boost... fuel pressure is hell high 52psi, shouldnt be leaning out, didn't get 7000rpm rev limiter first time, does work with 3.5 AEM map sensor, i dont know if i am going to buy the SCT Pro racer package or sell and go with AEM-EMS. Very disappointed.
You should not be disappointed in SCT, the equipment is fine it is that the tune does not match your car.
You need to get to a Dyno / SCT Tuner and get your car tuned then all will be Good.
NO One can write a tune for a car with that many mods and mail it to you and expect it to run right, if they said they can they should not be allowed to own the software.
I have been tuning cars for 27 years and I won't write a tune for anything other than a basically stock car for mail order.
Every combination has a personality and must be custom tuned on a Dyno with proper data logging.
I have the SCT Xcalb2 and it has been nothing but junk, i have fully built motor DCR oil system, built bottom end, head work, crane 16, 60-1 turbo, 750cc inj, return, bottle neckfix, dual 255 walbros, and the car will run 10 flat till about 4500rpm and the car goes lean bad high 12s and 13s when start getting boost... fuel pressure is hell high 52psi, shouldnt be leaning out, didn't get 7000rpm rev limiter first time, does work with 3.5 AEM map sensor, i dont know if i am going to buy the SCT Pro racer package or sell and go with AEM-EMS. Very disappointed.
You already have the flasher, you can save a bundle by getting the PRP. You get a complete tuning solution just like the AEM for a lot less. Not to mention you'll be able to tune the most powerful pcm money can buy for our cars.
BUMP ... AEM all the way...your going to spend alot of time dyno tuning because it does not data log. Even the pro-racer package. I am getting AEM EMS For the Win!
BUMP ... AEM all the way...your going to spend alot of time dyno tuning because it does not data log. Even the pro-racer package. I am getting AEM EMS For the Win!
You have to understand that there are a million things the SCT software can do that the AEM cannot. AEM is a fine solution for a car that is not daily driven and you just want basic fuel and timing control but if you want stock drivability you have to go to SCT. The SCT is capable of making more power on any given day as well. But it's only as good as the tuner. AEM is a simplified PCM that allows people with limited tuning experience to tune the car.
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GT3076R, return line, stage II injectors, 4" short Ram, 3" Turbo back, STS, SCT Flash PCM managment.
----This is Ojcool, my account was put on a no access list for defending myself and other SCT section Members in OT----
There is such a fine line between stupid and clever. SPINAL TAP
BUMP ... AEM all the way...your going to spend alot of time dyno tuning because it does not data log. Even the pro-racer package. I am getting AEM EMS For the Win!
AEM is a great computer, and you can get great driveablity out of them after countless hours of tuning and tweeking and lots of time on the dyno.
Don't think for minute that AEM is a cheaper or easier solution because it is NOT.
Your factory computer already has all the cold start, driveability and emmissions licked, and all you need to do is adjust certain tables to match your injectors, boost level, timing for fuel, etc.
SCT is the Lowest Cost tuning solution on the market with NO check engine lites, will pass emissions and will make as much or more power than anything else out there.
Don't believe the HYPE with the AEM.
I sell AEM and would love to sell you one but it is not the best solution.
Your points about drivablity and emissions are valid... but how will it make more power? They are both squirting the injectors and firing the spark plugs the same. Not trying to knock either solution (I'm a megasquirt geek so I'm not biased towards either). I just dont understand how one can make more power than the other...
Your points about drivablity and emissions are valid... but how will it make more power? They are both squirting the injectors and firing the spark plugs the same. Not trying to knock either solution (I'm a megasquirt geek so I'm not biased towards either). I just dont understand how one can make more power than the other...
Not neseccerily so, only if done by the same tuner, Chances are better with a stock computer because you already have a very good baseline to work with you could make more power with less tuning.
The Factory tuners have spent years on the dyno and on the road, figuring out what these motors need in every conceivable water temp, air temp, throttle position, load, rpm, humidity, altitude, combinations.
The injector timing is already perfect for this motor this would take a lot of trial and error to figure out with a stand alone.
There is also the Processor speed to consider most of the factory computers have very fast Processors, usually faster than the aftermarket units.
I run an AEM in my Sons 10.6 et 2 liter MR2, I have over 150 hours of tuning to get factory like driveablity, starting, warm up enrichment, great fuel economy, Passes emissions, and perfect power curves at every manifold pressure and RPM.
This OLD School 2 liter lays down 464 HP at the wheel and gets over 30 mpg.
Trust me your way ahead of the game starting with a stock computer.
Ted.
Last edited by JANNETTYRACING : 03-27-2008 at 02:29 PM.
Like I said, I agree about the drivability but I have my doubts that the NGC will make more power because of CPU speed. Injector timing has more to do with emissions than power. At higher pulse widths you're spraying on a closed valve anyway since its not possible to get enough fuel in while the valve is open. That makes injector timing at higher power somewhat irrelivant. Also, AEM is using the same crank trigger as the NGC (36-2 wheel). I have my doubts that the spark timing is any less accurate.
Again, not trying to cause any crap. I think you need to back up a claim like you're making.
Like I said, I agree about the drivability but I have my doubts that the NGC will make more power because of CPU speed. Injector timing has more to do with emissions than power. At higher pulse widths you're spraying on a closed valve anyway since its not possible to get enough fuel in while the valve is open. That makes injector timing at higher power somewhat irrelivant. Also, AEM is using the same crank trigger as the NGC (36-2 wheel). I have my doubts that the spark timing is any less accurate.
Again, not trying to cause any crap. I think you need to back up a claim like you're making.
Your reading too much in to it,
Quote:
Chances are better with a stock computer because you already have a very good baseline to work with you could make more power with less tuning.
Well that less tuning idea goes out the window when you install huge cams, injectors, ported head, big turbo, 3 bar map, etc. Having no datalogging and no ability to tune on the fly doesn't seem like an easier way to make power to me. I'm not knocking SCT here, I just think there's some misleading information being spread around.
Well that less tuning idea goes out the window when you install huge cams, injectors, ported head, big turbo, 3 bar map, etc. Having no datalogging and no ability to tune on the fly doesn't seem like an easier way to make power to me. I'm not knocking SCT here, I just think there's some misleading information being spread around.
What is it that I said that is misleading?????
Your inturpritation may be completely different than what I meant.
Well for one the talk about the AEM cpu speed being a limitation. Is there any data to back that up?
Also my comments were directed towards 'thermodynamics'. I don't think its fair to compare AEM to a carburetor. He makes it sound like the AEM is a very simple device while its one of the most complex aftermarket systems out there. Like I said, I'm not biased towards either. I just think everyone needs to be fair here.
Hell, I'll probably run an SCT tuned NGC ecu on my engine once this thing gets figured out more. It looks very promising.
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