after comtech s/c install, ecu is confused

Old 06-24-2009, 05:01 PM
  #1  
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after comtech s/c install, ecu is confused

I just had installed a brand new comptech s/c,
instead of +80 to 100 added hp, I have a drop
off of 20hp overall (sad but true). The dyno shows
the drop off at 4000 to 6000 rpm. this is below the
VTEC take off at 6600 or so. the vtec doesn't really
engage.

The installer is competent. His advice is drive the car
for a week or so and see if the stock ecu wakes up
and resets itself to take advantage of the new boost.
(dyno shows the boost is flat and steady at +5 psi).
I did have an apexi installed. it was disconnected
because Comptech suggested a return to a clean
ecu configuration before making mods.

does anyone have experience with an ecu reset/re-flash
or this type of occurrence ?
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Old 06-24-2009, 05:08 PM
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That is a weird reaction to boost. Is it just dumping fuel and running way too rich? You might try disconnecting the battery for a minute then reconnecting and run the car hard to set the ecm for a new fuel map. Good luck.
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Old 06-24-2009, 05:46 PM
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an easier way to reset the ecu is to look at the fuse panel under the dash and pull the fuse thats all the way to the left and second fuse down. Also what was your max whp you made?
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Old 06-24-2009, 06:41 PM
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reply

Originally Posted by s2000isu View Post
an easier way to reset the ecu is to look at the fuse panel under the dash and pull the fuse thats all the way to the left and second fuse down. Also what was your max whp you made?
my peak hp was 205 before the s/c

now it is 180 or so

i disconnected the battery and then ran it a little hard.

it seemed to improve, but had some hestitation in the 5 to 7
thousand rpm range. i do feel an increase in hp in my butt.
but the system is not yet stable.

sugesstions??
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Old 06-24-2009, 06:48 PM
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youre only making 180?????????? Something is very wrong and its not that your ecu needed to be reset. A good installer/tuner would have told you that. Have you hooked a wideband up to it yet?
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Old 06-24-2009, 07:07 PM
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I agree, something is def wrong here. You should be giggling like a school girl right now.
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Old 06-25-2009, 10:23 AM
  #7  
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Originally Posted by ironpumper View Post
I just had installed a brand new comptech s/c,
instead of +80 to 100 added hp, I have a drop
off of 20hp overall (sad but true). The dyno shows
the drop off at 4000 to 6000 rpm. this is below the
VTEC take off at 6600 or so. the vtec doesn't really
engage.

The installer is competent. His advice is drive the car
for a week or so and see if the stock ecu wakes up
and resets itself to take advantage of the new boost.
(dyno shows the boost is flat and steady at +5 psi).
I did have an apexi installed. it was disconnected
because Comptech suggested a return to a clean
ecu configuration before making mods.

does anyone have experience with an ecu reset/re-flash
or this type of occurrence ?
Do you know how many actual PSI you're running? I mean an actual reading from a gauge, not just what it says in the install manual. This could give an indication for a boost leak or spikes.
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Old 10-30-2009, 07:55 AM
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So whats the end result for this?
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Old 10-30-2009, 08:55 AM
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Well he hasn't been back on the site in 4 months so I doubt we will find out any time soon.
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Old 12-21-2009, 10:23 PM
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either it fixed itself and hes been so happy driving he doesnt use the computer anymore, orrrrrrrrrrrrr he got frustrated and sold it
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Old 01-13-2010, 09:56 AM
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May be the ESM that came with the kit was not installed correctly to the ECM. I had this problem occur with my Acura CLS 6spd when I had the Comptech SC install.
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