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08 civic si reflash

Posted: Thu Jan 29, 2009 3:39 pm
by Sanmiglite
Just got my reflash from church automotive last friday (thanks church automotive). I have aem cai, tbs, tbg, img, strup header, hks sport catback, crank pulley. What i noticed was its seems the car is slower. Before the reflash the car would accelerate faster from 4.5 all the wAy to 8k. Now, it takes a while and i would really have to floor the gas. With all my bolt ons, would the ecu have to relearn everything? Coz i remember when i installed my pulley, header, intake, it took a week before i felt the difference. Thanks.

Posted: Thu Jan 29, 2009 6:08 pm
by Spunkster
You really need to put it on the dyno to see the actual hp change. Because the vtec point has been lowered you may not feel that distinct change in power you used to.

Posted: Thu Jan 29, 2009 6:48 pm
by Sanmiglite
Spunkster tnx for the reply. Im definitely going to the dyno. Good thing i dynoed my car before the reflash.

Another ? : i was thinking of sending my cylinder head to portflow. Would this have a neg effect coz i have a reflash? Tnx.

Posted: Fri Jan 30, 2009 5:19 pm
by Spunkster
You probably won't see any gains from haveng the head ported with stock cams and no way of tuing the ecu.

Posted: Fri Feb 06, 2009 5:35 pm
by Sanmiglite
Spunkster,

here are results of my dyno. before and after reflash

Posted: Fri Feb 06, 2009 5:36 pm
by Sanmiglite
let me know what you think? are the gains really minimal at peak rpm? thanks for your input

Posted: Mon Feb 09, 2009 8:46 am
by Hondata
The dyno result is almost identical to what we found in testing:

(see http://www.hondata.com/reflash_06_civicsi.html)

Image

Posted: Mon Feb 09, 2009 3:21 pm
by Hondata1
Yes. This is exactly what we say on the reflash page: "Power is gained in the midrange from 4700rpm to 6300 rpm. Power gains above 6500 rpm are negligible, although the higher rev limit will raise average power a little."

Posted: Tue Feb 17, 2009 12:36 pm
by Sanmiglite
Hello,

If i were to use the 06 tsx cams, would the reflash work? Ive heard ppl using tsx cams on the z3. Thanks.

Posted: Tue Feb 17, 2009 1:20 pm
by Spunkster
This is not tested, and is not recommended as the tuning for other cams will be different than the stock cams.