So were still busy tuning but the ecu seems to do a check "if boost > X then throw code" the p0234 overboost.


Has anyone found a way around this so we can squeeze more boost out of the engine yet? there are still a lot of area we can improve in the tuning but its tripping that code without a cel coming on in the car.

 

whats your boost level at? are your sure your sensor is still good?

 

you go to hondata forum and ask them? id be curious on what they say

 

yeah they had no answer for it currently.

 

we are getting just a bit over 14 psi max

 

I set up a post on hondata forums with a datalog for them to dissect hopefully we will get some results.

 

Alex from Humble Performance was getting 17psi on my tune. We hope to get over that with the 100+ octane so the knock sensor can be somewhat happy.

 

did you ever trip the p0234 over boost code? im not getting a cel but its popping up in the errors. im also a little bit higher elevation and 91 octane dunno if that makes a difference. Curious if you had to clean any sensors or replace them. I am at 95k miles.

 

No, we never got an over boost code. I haven't cleaned any sensors and I was on the dyno at 110k miles. What is your current setup?

 

cpe intake only with flashpro. do you think I may have melted the cat to where its back pressure is screwing with the knock which is screwing with other stuff

 

Not sure about that, but I do know that the knock sensor is crazy sensitive and it could screw with other stuff. You might want to check your injector duty cycle. My stock was hitting close to 100% when I was running the flashpro with intake and exhaust.

 

my duty cycle has been running at 60 to mid 70 percents when on it.

 

let me link to my post on hondata so you can download my most recent data log maybe see something im missing.


http://www.hondata.com/forum/viewtopic.php?f=29&t=17878

 

a copy of my current tune file is there as well.

 

How is the MAF sensor placed in the CPE intake ? @ken what intake are you using? Do you know diameter around MAF Sensor ?

Also i think the knock sensor is picking up too much valve chatter, get the tightened back to specifications and try again its pulling crazy amount of timing while you're WOT.

side note are you FWD or SH-AWD?

 

Awd. Hondata traced it to an ecu boost cut they are in the process of unlocking and removing the check. Ill keep you guys posted

 

any change on this particular topic? I thought we could adjust the boost curve with flash pro? am I wrong?

 

My ecu has a boost cut check. Still waiting on hondata to expose the tables. U can check the post on hondata to get specifics on ecu etc. I have full flashpro but mine likes to throw over boost code over 14.5 psi. Will update asap.

The rdx has a complicated set of checks/monitors

 

Good news. We will have more parameters to tune with next FP update

 

and this will be out when? cause im due for some dyno time in the next week or 2...

 

did he make any mention of maybe backing off the knock sensitivity in the flashpro settings?

 

No, but the higher octane should take care of that.

 

no specific release time yet. Maybe it will be in the next beta before the next official release...crosses fingers. At the moment my tuner and I are on pause :-(.

 

Tell them to contact Humble Performance, Hondata even calls them for advise.

 

I sent a pm but if you wanted humble to chime in on the hondata post that would be cool. the more reputable vendors and tuners chiming in on things gets it all done quicker :-P

 

Ok

 

my 08 just had this cel pop up the other day... guess I cant expect to much more out of it.

 

Just curious, does anyone know what the range is of the map sensors for this car? 2, 2.5, 3 bar? My old car came with 2.5 bar sensors and it would throw overboost codes at ~22 psi, which is just about 2.5 bar. 14.5 psi is also right at 2 bar. I wouldn't think Honda would only put a 2 bar sensor on this car, but who knows?

 

hondata said map is rated to 26psi

http://www.hondata.com/flashpro_acura_rdx_turbo.html

 

Next fp update u can overboost

 

2.6 ish bar was in range

 

Can't wait for everything to drop!

 

new beta for flashpro is out. lets get to tuning people. rdx fix is IN!

 

Yep shit just got real!😐

 

so I'm running 2.150 on the top end in flash pro. need to go back to the dyno though. a bit pingy and don't want to hurt things but it did hold boost a bit better. I'll wind up pulling timing and setting the knock sensitivity a bit higher.

 

Come on, go for an even 2.38.

Not sure what kind of top end the turbo will be able to give you, but 300 ft-lb seems very attainable with some extra boost. Nothing like that fat mid range, especially on the insanely widely geared transmission.

 

Assuming 2.150 is boost pressure set in absolute bar (i.e. 2.150-1.0 atm = 1.15 bar gauge pressure ~= 17psi)?

If so, sounds like you are able to hold higher boost pressures with the new version of FlashPro correct? Any initial power/torque numbers? And you are running stock turbo still yes?

 

I hold around 14-16 psi that's about it.

 

what are your current numbers ??? and yes mine is starting to backfire when cold...

 

we are on hold till the next update. i have no backfiring at all.