I just got off the phone with Calvin about a small noise issue with V3. I'm posting here incase anybody else is experiencing it.

I did the V3 update last night at my apt. Excepting my own incompetance, everything went pretty smoothly. After flashing my two maps back to the Xede, I noticed a clicking sound under light throttle load. At first I thought this might be detonation/knock/pinging so I loaded a stock like (-0.3 for maf & crank tables and a boost table that looks almost identical to the stock boost curve) map and still got the noise.

Listening closer, I found out the noise was more an electronic clicking than the rattling metallic sound of knock. Also, the clicks are spaced uniformly in time as opposed to knock which sounds random and sporadic. I am getting the noise around 2000 RPMs under light-medium load. There is no powerloss or percieved timing retard nor have I gotten any DTC (check engine light) codes.

Actually the sound is just like what people have described from electronic boost controllers, where the sound was coming from the boost solenoid. Calvin just confirmed that there is a known issue with v3 and a clicking sound coming from the solenoid. Apparently several people have the noise, but it happens at different times. Some people have it at idle. I don't. I've been assured that the clicking isn't damaging the boost solenoid, but I imagine it's probably not good to run it light that forever.

Everybody@Vishnu: Could somebody post a link to the V2 firmware for people who want to flash back for the time being?

d

 

I have always heard that clicking even on stage 1+ with v2. It is normal Bra. Maybe urs is a lil different but I believe the clickin under accel is normal.

 

I definitely didn't hear it yesterday before flashing to v3. I've also been told that some people are getting it at idle.

I didn't think that this was the same clicking sound that the first batch of xede's had.

d

 

heheh.. you have good ears. v3 drives the boost control solenoid better than v2. So you may hear it more. To eliminate this noise, readjust your boost table so that it has 0s or 100s in it during those partial throttle conditions. What you are hearing is it clicking at a duty cycle between 0 and 100, presumably as it moves between two adjacent cells

Shiv

 

I have a better idea. Post updated baseline version maps. I'm just using STOCK93.xmd anyway.

d

 

I assure you it will be quicker if you do it yourself Go to the boost map and zero out everything below Load 25. Save, upload and burn. And you're done.

Shiv

 

I didn't say quicker. I said better. That way, everybody gets the benefit!

I sent Rhys a bug report on Xmap 3 this morning and CC'd you. If anybody stateside has access to the codebase they can probably fix it in no time flat.

thanks again

d

 

What about posting the version 1 firmware?