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George @ BMS's Avatar
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Default 04-13-2021, 07:10 AM

Quote:
Originally Posted by Nez136
So Audi replaced the whole gas tank in my RS since the fuel sensor is molded into it! Absolutely crazy! Anyway pulled the JB4 off and warranty covered it. Audi Corp didnít ask questions when they saw the code so it seems they know about it happening in some vehicles. Got the car back and running without codes now. We are pretty positive ethanol had nothing to do with it. Back on map 5 and feelin good ��
Happy its all sorted. Rather now than when you out of warranty


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vitipr vitipr is offline
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Default 04-21-2021, 04:09 PM

George, I just changed to Map 4 with the E85 blend on my 21' sq5 and feel very good, no problems so far. I sent you the logs(email). Has anyone tried the 1/4 mile with the 21' sq5, stock vs jb4?
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stinkcheese stinkcheese is offline
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Default 04-21-2021, 05:08 PM

Quote:
Originally Posted by vitipr
George, I just changed to Map 4 with the E85 blend on my 21' sq5 and feel very good, no problems so far. I sent you the logs(email). Has anyone tried the 1/4 mile with the 21' sq5, stock vs jb4?
Hey if you don't mind, can you send me a copy of the logs too? I have the same car, albeit a few mods, and wanted to compare figures with different fuels over the period of time I've had the Jb4 on my 2021 sq5. I'll send you mind too if you want to look over them as well. Cheers!

(You can PM me and we can discuss from there if you'd like, thanks)
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vitipr vitipr is offline
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Default 04-21-2021, 05:59 PM

Quote:
Originally Posted by stinkcheese
Hey if you don't mind, can you send me a copy of the logs too? I have the same car, albeit a few mods, and wanted to compare figures with different fuels over the period of time I've had the Jb4 on my 2021 sq5. I'll send you mind too if you want to look over them as well. Cheers!

(You can PM me and we can discuss from there if you'd like, thanks)
Ok, cool. I'll send you the logs tomorrow if I don't forget.
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MrSkimo MrSkimo is offline
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Default 04-22-2021, 07:10 PM

George @ BMS - I just noticed that APR has a high pressure fuel pump rebuild available for the 2.9T and 3.0T EA389. They are claiming 37% increased fuel volume. My next upgrade this fall (post warranty) was going to be the BMS WMI kit. I am currently mixing fuel. Do you think that this fuel pump upgrade would yield increased performance with the JB4?

APR MS100211 APR High Pressure Fuel Pump - 2.9T and 3.0T EA839 (Rebuild)


2018 S5 B9
AWE Intake
JB4
APR Intercooler
RedStar exhaust

Last edited by MrSkimo; 04-22-2021 at 07:11 PM.. Reason: Added link for fuel pump upgrade
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George @ BMS's Avatar
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Default 04-23-2021, 03:58 AM

Quote:
Originally Posted by MrSkimo
George @ BMS - I just noticed that APR has a high pressure fuel pump rebuild available for the 2.9T and 3.0T EA389. They are claiming 37% increased fuel volume. My next upgrade this fall (post warranty) was going to be the BMS WMI kit. I am currently mixing fuel. Do you think that this fuel pump upgrade would yield increased performance with the JB4?

APR MS100211 APR High Pressure Fuel Pump - 2.9T and 3.0T EA839 (Rebuild)
On a stock turbo it is not really needed but does give the car some fueling room for safety purposes. If we on map 6 and a extreme map will most likely be beneficial.


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Justin_Swift6 Justin_Swift6 is offline
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Default 04-27-2021, 09:16 PM

About to take delivery of a 2018 S5 Coupe and very interested in getting the JB4, may I ask have there been any hardware problems for using it? For example engine or turbo blows up, oil leak etc?
If there are no any hardware problems I think I will settle with map3, what are you guys getting with map3 in terms of 0-60 and 1/4 mile times? Thanks!
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Default 04-28-2021, 04:07 AM

Quote:
Originally Posted by Justin_Swift6
About to take delivery of a 2018 S5 Coupe and very interested in getting the JB4, may I ask have there been any hardware problems for using it? For example engine or turbo blows up, oil leak etc?
If there are no any hardware problems I think I will settle with map3, what are you guys getting with map3 in terms of 0-60 and 1/4 mile times? Thanks!
Hi,

The model does not seem to have any design flaws like the 2.0T so they are very durable even with hybrid turbos.


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Justin_Swift6 Justin_Swift6 is offline
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Default 04-28-2021, 12:04 PM

Quote:
Originally Posted by George @ BMS
Hi,

The model does not seem to have any design flaws like the 2.0T so they are very durable even with hybrid turbos.
Thank you George! What about any transmission problems due to JB4ís added torque? and what kind of 0-60 and 1/4 mile time can I expect with my local average quality 93 gas?
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Default 04-28-2021, 02:34 PM

Quote:
Originally Posted by Justin_Swift6
Thank you George! What about any transmission problems due to JB4ís added torque? and what kind of 0-60 and 1/4 mile time can I expect with my local average quality 93 gas?
The transmission is at full lock up quite a bit below maximum stock torque so the JB4's added torque is no issue. There are hybrid turbo cars running with no issues neither.

You should get in the 11's and highish 3's for 0-60mph. Fastest stock car we have seen is 11.6sec and 3.6 to 60.


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Justin_Swift6 Justin_Swift6 is offline
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Default 04-28-2021, 03:24 PM

Quote:
Originally Posted by George @ BMS
The transmission is at full lock up quite a bit below maximum stock torque so the JB4's added torque is no issue. There are hybrid turbo cars running with no issues neither.

You should get in the 11's and highish 3's for 0-60mph. Fastest stock car we have seen is 11.6sec and 3.6 to 60.
Oh really!? Map3 will get me into high 11's and high 3's? That's what I expected with map5 on E30 lol and it's faster than my current 16 Camaro SS at 4.0 and 12.3 with stock 455hp!
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Justin_Swift6 Justin_Swift6 is offline
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Default 04-28-2021, 08:12 PM

and I just found out the S5 uses 0w20 oil, that seems very thin to me, would you recommed using something like 5w30 or even 5w40 especially when I start to use JB4?
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Slava Slava is offline
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Default Map4 and Map5 logs on E85 blend - 04-29-2021, 01:56 PM

Did a few logs on map4 and map5 both on E85 blend 5.5 gal to rest of 91. AFRs seem to be high on WOT most of the time above 14 and a few times in 15s. What do you guys think? I attached both logs. It's a stock S5 with a K&N drop-in filter.
Attached Files
File Type: csv 210428map4.csv (9.9 KB, 12 views)
File Type: csv 210429map5.csv (7.4 KB, 10 views)
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George @ BMS's Avatar
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Default 04-30-2021, 08:13 AM

Quote:
Originally Posted by Slava
Did a few logs on map4 and map5 both on E85 blend 5.5 gal to rest of 91. AFRs seem to be high on WOT most of the time above 14 and a few times in 15s. What do you guys think? I attached both logs. It's a stock S5 with a K&N drop-in filter.
Both look good. The AFR will come down if the ECU sees high exhaust gas temperature. With the mix in cylinder temps are cooler so it leans it out a bit.
Boost is a bit under target so make FF wastegate adaption value 100 as well as fuel open loop 100 to get a bit of a higher fueling ceiling.


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