I heard that when you change out the stock intake on the G35 and replace it with, lets say for a Z-Tube and the JWT pop-Charger... Is it true that you have to reset the ECU???

 

Yes, it is recommended.

 

I think the previous post should have ended

...for the 5at only.

Resetting the ECU for the 6MT, IMO, is a waist of time for an intake mod. Electrons don't get hung up in outer space. The ECU can read what the O2 Sensors are measuring SUPER QUICK (Q45tech can tell you how fast) and your car will adapt accordingly. Some people like to reset the ECU with the automatic to make their shifting quicker/smoother (or at a slightly higher rpm), with the 6MT you make the shifts as when ever and where ever you want on every single shift. [img]/w3timages/icons/wink.gif[/img]

Also, this has been discussed before and many people feel differently than I do about this subject. I am not trying to start any wars here, just voicing an opinion. Please refer to the caveat...

<font color=blue>The above statements are only my take on the issue. If you disagree with anything I typed then you are 100% right!</font color=blue>

 

>>>this has been discussed before and many people feel differently than I do about this subject.<<<<<

I declare WAR !!!

 

Many will state that its a must on the autos but the ECU will adapt to the mods over time...if you can wait for that.

03.5 Sedan/B.Sil/Prem/Wntr/Aero/Tint/Rims/Hotchkis Sways--WHERE ARE OUR PARTS!
69 Chevelle Hard Top BB/4.11's/Posi

 

There was another thread where the service manual states that the ECU needs 180 miles to adapt to changes to the system. So you don't need to reset the ECU, just drive 180 miles. Even if you reset the ECU, you still need to drive 180 miles.

 

Resetting ecu returns the multiple fuel memory registers to 128 [the exact midpoint of the 0-256 range], the setting as new before the car was ever cranked.

Does it make sense that a mod would be the same as a factory set up IF the mod did ANYTHING?

The memory portion of adaptive learn is there to allow a way to compensate for differences between engine banks caused by injector manufacturing errors or subsequent fuel piston/valve deposits or any minor changes in the bank to bank fuel flow.

The long term fuel trim values are developed over 50-100 miles of cruise driving and used to help improve wideopen throttle performance when the ecu nor oxygen sensors can test AF ratio.

Resetting the ecu means all this good necessary data is dumped away.

ECU resetting except to clear /check for erroneous OBD2 codes shows the lack of understanding of how the ecu works.

The memory is there also to prove during an emission test that the owner just didn't reset the ecu [clear the codes turn the light off] in the parking lot while waiting inline for the test!
Thus the comment about needing to drive 50-100 miles to get an emission ready for test flag.

 

our cars are OBD II meaning...that over time the computer will adapt to the new settings and will eventually alter things to make the car run to as close as stock as possible

in order to make the changes feel the same ... you need to reset the ecu every so often

2003 G35C -soon to be moded-
2001 BB6 -moded-

TRACK TIME ... THERE IS NO SUBSTITUTE!

 

...and the most important statement in this thread...
<blockquote><font class="small">In reply to:</font><hr>

ECU resetting except to clear /check for erroneous OBD2 codes shows the lack of understanding of how the ecu works. "...by q45tech

<hr></blockquote>

If q45tech is an Infiniti Technician as he professes, and actually has over 10 years of experience with these cars, again as he professes, I think this statement should carry some weight.

Thanks for weighing in Q-

<font color=blue>The above statements are only my take on the issue. If you disagree with anything I typed then you are 100% right!</font color=blue>

 

I have heard this discussion go on forever. It quieted down the last 3 months. For the record, after modying my G35 by adding pop charger, z tube, plenum, cats, I never once reset the ECU and I was able to obtain the desired results.

2004 G35 Coupe/OB/Graphite interior/Premium and aero package/Popcharger/Z tube/Hotchkis sways/Tein H-tech springs/Kinetix plenum/Crawford cats

 

i have those exact mods with an auto and i did nothing. it adapts, dont bother

04 5AT / TB / Willow / Premium / clear corners / Z-tube / JWT Popcharger

 

This post should be bronzed and made a sticky thread in every single category on this website. It debunks probably the biggest myth in G tuning.

2004.5 Coupe/5AT/Ivory/Everything but front spoiler/Nismo CAI/Crawford V5/Crawford Cats

 

Actually there is a way to trick an ECU to constantly reset itself.

Since the ECU learns over time what the mods are and then detunes itself. BAsically what you can do is you need to cut the power to the ecu back up power supply.

I did the same thing on my 2001 Prelude. It was OBD II and after about 2 weeks the car would perform like stock. So a few people figgured out that if you cut the back up bower wire to ecu which in turn keeps the memory dupplied with power after the car is OFF so it can maintain what it learned. Onc eyou cut it off, everytime the car is off it would loose all that it learned, thenafter you turn the car ON it would start all over. SO in other words it would be as reseting the ecu evertime you shut the car off.

I had this mod done on my car for over 3 yrs. didnt see anything wrong with the car (NOT ON THE G) and i know others who had it done longer witout any problems. SO i'm sure doing the same on the G would work the same way.

2003 G35C -soon to be moded-
2001 BB6 -moded-

TRACK TIME ... THERE IS NO SUBSTITUTE!

 

"Since the ECU learns over time what the mods are and then detunes itself."

This statement is wrong. Please stop repeating it.

2004 G35C 6MT Black. Killer.

 

Yes, read what Q45 wrote a few posts back. It makes sense.

'04 6MT coupe