ok been learning about ecuflash tuning allot lately and just converted my rom over to the tephra V7 and flashed it over to the car after i went threw every single value. took it on a test drive. started great idled perfect, afr and boost close to perfect. but i noticed a weird pulsing noise from my wastegate mid boost and in high gear building boost. i have a boost pill so i was kinda leery to go more than partal throttle. and when i got home turned it off and tried to restart just cranked and cranked. so its back on my other rom... can any one take a peak and see?? im not quite sure how to post my rom, just sais invalid file..

oh and im not sure if i got the main map wastegate duty correct? i had it all set at 0 and changed it to what it is now. haven't installed it to test it tho.

 

check your 100% under 200 load thingy...

set it to like 150load

 

could you please tell what is being controlled by this parameter? I moved to v7 from full stock. So far I'm running it full stock (waiting to Omni 4 bar and WBO2 to be installed to proceed with tune) both in terms of tune and specs.
So the question is: if i have all 0's in gear-based boost contol table (Baseline WGDC by gears) and 200 in "100% WGDC under this load" what is my boost expected to be and by what principle is it being controlled?

Thank you in advance.

 

well i can tell you i changed my wgdc in 100% to 150 and wgdc by gears to 100% for the first 3 and and the others i think just slowly tapering to 70% i think.. and my boost didnt change noticeably.

did anyone else have any problems with converting to tephra and being able to drive your car once and after it sits for a while it acts like its getting no fuel and just turns over over and over

 

anyone know why i can drive my car one time but soon as i turn the ignition off and try cranking it, the car just acts like the immobilizer is not working. but have the immobilizer disabled and still acts completely the same.

 

sounds like the pulsating noise you are hearing is your bov fluttering(opening & closing) during boost build up.

 

I believe it is my wastegate, i think i fixed that problem. i noticed my WGDC was set to 0 on all gears so i changed that. but i still havent been able to test it due to my car suddenly decides it doesnt want to start shortly after the flash to the tephra v7..

 

I believe this is the same issue I'm having.

I have a ZT2 wideband on it's way and figured since the stock tune is the same between my rom (88590013) and the IX v7 rom (88590015) I could just switch and use the knockCEL until I'm ready to tune when parts arrive.

I get the same pulsating WGDC due to the tables being completely zeroed out. My load was climbing to 200 then fluttering up and down as the WGDC went between 100% and 0%. If it were a leak or BOV flutter, the WGDC would not be bouncing prior to the air leaking. I've confirmed this doesn't happen on my stock rom.

Tephra said in a PM to lower the value for "WGDC=100% under this load" which was set at 200. I changed it to 180 and now my load goes to 180 and oscillates back and forth.

I'm pretty sure after finding this thread, that I simply need to have values other than zero for the WGDC tables.

I never wanted to convert to ECU controlled boost since I'm blind without a wideband or MAP sensor to log boost. I wish this was mentioned in the getting started instructions. After changing the immobilizer it really should mention something about your boost tables needing tweaked.

I just wanted to document this somewhere in case others run into this.

 

How were you controlling boost prior to going v7? You should be able to control boost like you did before without much trouble.

 

The car is stock save for a TBE still with cat, and Apexi cone intake. I have a mechanical boost gauge and the car was hitting 20psi.

It's just the stock pill and BCS. I havent touched the V7 boost tables at all. Didn't think I had to in order to remain stock.

With V7 my boost is fine and smooth until it hits the load specified in the "WGDC=100% under load" table. I think that's because the other stock tables for boost were removed to support gear based boost.

I just didn't see any instructions saying to touch boost tables, so I didn't and now I believe the only reason I'm holding boost is that the WGDC is forced 100% below that load value.

So my change for today before driving home from work, would be to open my stock rom and copy the BWGDC values into all gears in the V7 table. BDEL is still stock and doesn't need touched in V7 right?

All I want is to remain stock with regards to boost control. If I'm missing something let me know. It's hard to search on because of all the threads controlling boost with V7. I'm not trying to do that per say, I just want load based boost like with my stock rom.

 

Yes, you need to copy your BWGDC tables from our old rom into every gear in the v7 rom. Otherwise, as you're experiencing, as soon as load increases past the "WGDC=100% under load" table it'll go back to the WGDC table, which you have zero'ed out.

I suspect they're zero-ed out by default in v7 to prevent overboost if someone forgets to set them properly.

 

Good deal. I'll give that a try here on my lunch break and see how things go.

I figured I was missing something. It took a good day or two to figure it out. I had gone down the path of boost leaks first before thinking to check the WGDC.

My car without V7 would boost to around 210-220 load max so it just felt like I was down on power. It wasn't until I lowered the WGDC=100% value to 180 that it became apparent what was going on.

Thanks for the help.

 

Yup that fixed it. My stock rom was set to 100% everywhere in the BWGDC due to having the pill installed still.

I changed the V7 rom to 100% in gears 1 through 6 and it worked. Now boosting normally and hitting 215 load without the flutter.

Thanks for the info guys. Now I can await my ZT3 + ZR1 gauge.

 

No problem!

 

whoa, can someone please post these screenshots of these tables? So if Im running 26psi, would this resolve the issue? Mine was set to 10 and my HKS EVC was maxing 98kpa(~15psi). Can someone please let me know what these values should be for the evo-ix SE rom ID 88590715?