Competch ECU!!??
#3
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Re: Competch ECU!!??
Originally posted by WiLd~CL~TYPS-@SS
Anybody has it??
Anybody has it??
Only AEM has a replacement, and thats for the entire on board computer.
Nick
#4
Senior Moderator
Re: Re: Competch ECU!!??
Originally posted by nvpscore
You mean the ESM??
You mean the ESM??
E.S.M. (Electronic Signal Modifier)
$149.00
NEW!
This adjustable switch is commonly
used to keep the ECU from seeing a boost
signal from the MAP Sensor when you are adding
a turbo or supercharger to a car that didn't come that way.
Can be used on any car or sensor up to 3.4 volts.
Easy4 wire hookup. Comes adjusted for Honda/Acura
MAP voltage signal, but is easily adjusted to
needs of other cars. Universal fit.
Not subject to CARB certification.
I've been doing research on the electronics end of the CLS, so I can try to understand WTF scalbert and the other guys are talking about (DTC's, ESM's etc, etc)
I must buy the Helms manuals....
#5
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Re: Re: Re: Competch ECU!!??
Originally posted by greenmonster
If you mean ESM (comes in the computech SC kit) then I think it's only useful on forced inducted engines.
E.S.M. (Electronic Signal Modifier)
$149.00
NEW!
This adjustable switch is commonly
used to keep the ECU from seeing a boost
signal from the MAP Sensor when you are adding
a turbo or supercharger to a car that didn't come that way.
Can be used on any car or sensor up to 3.4 volts.
Easy4 wire hookup. Comes adjusted for Honda/Acura
MAP voltage signal, but is easily adjusted to
needs of other cars. Universal fit.
Not subject to CARB certification.
ok i got it now..thanks
I've been doing research on the electronics end of the CLS, so I can try to understand WTF scalbert and the other guys are talking about (DTC's, ESM's etc, etc)
I must buy the Helms manuals....
If you mean ESM (comes in the computech SC kit) then I think it's only useful on forced inducted engines.
E.S.M. (Electronic Signal Modifier)
$149.00
NEW!
This adjustable switch is commonly
used to keep the ECU from seeing a boost
signal from the MAP Sensor when you are adding
a turbo or supercharger to a car that didn't come that way.
Can be used on any car or sensor up to 3.4 volts.
Easy4 wire hookup. Comes adjusted for Honda/Acura
MAP voltage signal, but is easily adjusted to
needs of other cars. Universal fit.
Not subject to CARB certification.
ok i got it now..thanks
I've been doing research on the electronics end of the CLS, so I can try to understand WTF scalbert and the other guys are talking about (DTC's, ESM's etc, etc)
I must buy the Helms manuals....
#7
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Originally posted by sidemarker
i thought this was only applicable to the SC...
i thought this was only applicable to the SC...
MAP---------->ESM-------->ECU
1 - 5VDC------------------>1 - 3.4VDC
0 - 2 BAR----------------->0 - 1.2 BAR
The ESM just intercepts the signal before it reaches the ECU and limits the output at a certain level. So yes, the ESM is just used on a boosted engine to keep the ECU from seeing the boost and setting a DTC.
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#9
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Originally posted by Nashua_Night_Hawk
scalbert, what happens when the ESM clamps the signal doesn't this mess up the timings?
scalbert, what happens when the ESM clamps the signal doesn't this mess up the timings?
In stock form the most the ECU ever sees out of the MAP is about 3 VDC.
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Originally posted by Nashua_Night_Hawk
Okay... in other words, What the MAP is used for? The function that depends on this signal would be "inccorect" when the signal is clamped...
Okay... in other words, What the MAP is used for? The function that depends on this signal would be "inccorect" when the signal is clamped...
Base ignition timing is a set value based on table look-up from a myriad of parameters; the manifold pressure would be part of it but one among many. There are two other sensors that will affect the offset of the base timing; it is the engine temp and the intake air temp. This is one reason why you have less power in weather; the air is less dense but also because timing has been backed off.
Remember, the stock tables are not designed to read positive manifold pressure so clamping the output is just a method to keep from setting a DTC. Even if the DTC would not be set I doubt Honda would even bother to extends the tables to account for positive manifold pressure when there is no reason (for them) to read boost values and calculate for them on a stock engine.
#12
Happy CL-S Pilot
Can we conclude that for FI appication like CT SC the stock ECU is not adequate and an aftermarket ECU like AEM's would be great idea to better tune the SC.
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Originally posted by Nashua_Night_Hawk
Can we conclude that for FI appication like CT SC the stock ECU is not adequate and an aftermarket ECU like AEM's would be great idea to better tune the SC.
Can we conclude that for FI appication like CT SC the stock ECU is not adequate and an aftermarket ECU like AEM's would be great idea to better tune the SC.
But IMO, with the modest levels being run with the Comptech SC the components supplied are certainly adequate. But if someone really goes all out and adds a turbo or even runs the boost up much higher an aftermarket DFI might be a better solution.
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Originally posted by greenmonster
Scalbert, if you continue posting stuff like this, I might actually learn something
Thanks for the informative post.
JP
Scalbert, if you continue posting stuff like this, I might actually learn something
Thanks for the informative post.
JP
search for all his posts, hes educated...
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