Iso 27 - N54Tech.com

Terry @ BMS · **Iso 27 -** 09-23-2013, 01:17 PM

Hey guys,

Just designed a potential firmware revision that I *think* you guys are going to really like. It's very similar to 26.6 only with some tweaks to the low pedal input throttle blade management meant to both improve response & cut down rattle. Normal menu 10 & menu 12 settings will apply. Looking forward to some feedback and a few logs.

BrewRifle · 09-23-2013, 01:20 PM

Good stuff, Terry. Cheers!

psmitty95 · 09-23-2013, 01:57 PM

Just loaded it up. Felt very good and had a bit more kick then previous firmwares for me. Here's a quick 3rd gear map 3 log I took. Other than the fact that I think I have a boost leak, it looks good to me

coolbho3k · 09-23-2013, 02:01 PM

So excited for this firmware, but my reaction when I remembered my car's in the shop getting ********* *** installed:

CHECKERED · 09-23-2013, 02:30 PM

Quote:

Originally Posted by Terry @ BMS

Hey guys,

Just designed a potential firmware revision that I *think* you guys are going to really like. It's very similar to 26.6 only with some tweaks to the low pedal input throttle blade management meant to both improve response & cut down rattle. Normal menu 10 & menu 12 settings will apply. Looking forward to some feedback and a few logs.

good thing these updated only take 6 mintues to load.

mmmcookies335i · 09-23-2013, 02:43 PM

Will try tonight, Don't know how much better it can get then 26.6 though

Terry @ BMS · 09-23-2013, 07:21 PM

37 downloads but no feedback... ?

coolbho3k · 09-23-2013, 07:43 PM

Quote:

Originally Posted by Terry @ BMS

37 downloads but no feedback... ?

I was one, sorry Terry, I downloaded to flash later. My car's still in the shop.

Bump cause Terry needs feedback people.

AWil335i · 09-23-2013, 08:10 PM

Felt a misfire on the way to work today (no codes), so I just downloaded this firmware and went out and got on it until the code popped up.

I really like this firmware.... very smooth initial pedal but still feels very responsive. I'll try to get some low throttle logs, but this felt really good. Upgraded from 26.5

Edit - i'm running the E85 flash but enabled the JB4 boost targets.

skyguy · 09-24-2013, 02:55 AM

I liked the low pedal feel so far but it's been raining non-stop since download...

lfelunden · 09-24-2013, 04:42 AM

Hey Terry, can I use this firmware on my JB4 G4? I can't seem to find new firmwares for it.

Hierlevelz · 09-24-2013, 04:46 AM

Quote:

Originally Posted by lfelunden

Hey Terry, can I use this firmware on my JB4 G4? I can't seem to find new firmwares for it.

No you cannot. G5 iso only.

lfelunden · 09-24-2013, 05:00 AM

Quote:

Originally Posted by Hierlevelz

No you cannot. G5 iso only.

Do you have any idea of where I can get a new firmware for the G4 ?

SeaBee335 · 09-24-2013, 06:15 AM

Quote:

Originally Posted by Terry @ BMS

37 downloads but no feedback... ?

Sorry Terry. I downloaded last night but wont be able to upload until tonight.

EvanL · 09-24-2013, 07:20 AM

Will upload this morning. Probably won't have a chance to drive until I leave work though...

Evan

Terry @ BMS · 09-24-2013, 07:36 AM

Quote:

Originally Posted by lfelunden

Hey Terry, can I use this firmware on my JB4 G4? I can't seem to find new firmwares for it.

The last firmware made fro the G4 was around 8/12. There will be no future G4 firmware made. Get the $150 G4->G5 upgrade kit!

coolbho3k · 09-24-2013, 07:38 AM

Quote:

Originally Posted by Terry @ BMS

The last firmware made fro the G4 was around 8/12. There will be no future G4 firmware made. Get the $150 G4->G5 upgrade kit!

I agree the improvement on G5 is worth it

335si · 09-24-2013, 08:39 AM

Will load up iso27 tonight or tomorrow along with the latest flash. I just replaced my LPFP, so I should be all set! I hope this brings the LPFP pressure to the 70psi range. I was in the 30s before!

rudypoochris · 09-24-2013, 09:31 AM

Looks good from that log despite the fat boost leak. Will try it out tonight.

CHECKERED · 09-24-2013, 09:42 AM

-I only had the 26.6 for 4 days so it’s hard to tell the difference between that and the 27
-so far no complaints

Terry @ BMS · 09-24-2013, 11:24 AM

Found a bug that may effect those running higher load flashes during spool up. I'll correct that and test the correction. But if there are any other logs out there on 27 shoot them in so I can check for any addl bugs before posting 27.1.

psmitty95 · 09-24-2013, 12:17 PM

Quote:

Originally Posted by Terry @ BMS

Found a bug that may effect those running higher load flashes during spool up. I'll correct that and test the correction. But if there are any other logs out there on 27 shoot them in so I can check for any addl bugs before posting 27.1.

Could that the delay I noticed last night? I'm noticing on low throttle like barely pressing down it takes the car a second or two to kick in. Basically a delay between pressing the throttle lightly and it realizing i'm pressing it

Terry @ BMS · 09-24-2013, 12:50 PM

This has nothing to do with spool up per say. It's a condition that would throw fuel trims max negative for a moment during spool and feel like a stutter. Added 27.1 to the first post which corrects it. The exact trigger is when actual boost is less than DME BT the JB4 was setting DME PSI to DME BT rather than actual.

jeffb335 · 04:57 PM

pretty much perfect throttle response on my car, super linear, as smooth if not smoother than stock.

EvanL · 09-24-2013, 04:16 PM

Haven't had a chance to do a WOT pull with 27.1 yet, but I have noticed the throttle response is smoother and, strangely enough, the engine seems to turn over faster when starting. How odd.