JB4 test unit

8YARWY

Translating gobbledygook
Finally received my JB4 testing unit today….

Been a delay on this whilst the wiring was checked, apparently something on the 8Y is different to the OPF 8V.
11c072ff124cbb7e66b7bb51f4a665ab.jpg

29337e41d6a3506349fde69923bef408.jpg



Sent from my iPhone using Tapatalk
 
Last edited:

Doja cat

Well-Known Member
Thanks for keeping us updated :)

On my previous car, I purchased a racechip GTS Black with mobile app control, but never fitted it. I've just received a response from racechip that they can swap it out for the RS3 8Y version.

Be interesting to see if I get round to fitting it this time (once I get the RS3 variant)
1651585663263.png
 

Joey Slats

Registered User
Finally received my JB4 testing unit today….

Been a delay on this whilst the wiring was checked, apparently something on the 8Y is different to the OPF 8V.
11c072ff124cbb7e66b7bb51f4a665ab.jpg

29337e41d6a3506349fde69923bef408.jpg



Sent from my iPhone using Tapatalk
Straight to a jb4, no jb1 first like on the 8v s3? , interesting. From when I had one on my s3 really rate them, be looking to get one for my upcoming RS if alls well
 

8YARWY

Translating gobbledygook
Straight to a jb4, no jb1 first like on the 8v s3? , interesting. From when I had one on my s3 really rate them, be looking to get one for my upcoming RS if alls well

Had a JB4 on my Daza engined RS3.

Made an around extra 40 hp and 54 ft-lbs over the standard figures when on the RR at Unicorn in Stockport with map 3.

Did a lot of logging and tweaked it further on a custom map 6 with a decent dragy time too

82acc426f33623104b95b0c4980d4aa8.jpg



Sent from my iPhone using Tapatalk
 

Gazwould

Registered User
Thanks for keeping us updated :)

On my previous car, I purchased a racechip GTS Black with mobile app control, but never fitted it. I've just received a response from racechip that they can swap it out for the RS3 8Y version.

Be interesting to see if I get round to fitting it this time (once I get the RS3 variant) View attachment 253815


Good luck....


Terrible , terrible company .

 

garethdj

Well-Known Member
Had a JB4 on my Daza engined RS3.

Made an around extra 40 hp and 54 ft-lbs over the standard figures when on the RR at Unicorn in Stockport with map 3.

Did a lot of logging and tweaked it further on a custom map 6 with a decent dragy time too

82acc426f33623104b95b0c4980d4aa8.jpg



Sent from my iPhone using Tapatalk

Strong 0-60 from just the JB4, I had Revo stage one on my Daza, best was a 3.08 from memory but 3.2s is what it would get consistently.


Sent from my iPhone using Tapatalk
 

betaone68

Registered User
On the Jb4 installed on the Mini F56 Cooper S model 2021 there is a setting where JB4 does a massive error cancellation due to the use of a sport catalyst . It seems an unrefined solution but in practice it works . I have already done 10.000 km after installation of 200 cell catalyst. I haven't had any problem and I've never read an error code on the ECU. Is there this option also for RS3 8Y?
 

8YARWY

Translating gobbledygook
On the Jb4 installed on the Mini F56 Cooper S model 2021 there is a setting where JB4 does a massive error cancellation due to the use of a sport catalyst . It seems an unrefined solution but in practice it works . I have already done 10.000 km after installation of 200 cell catalyst. I haven't had any problem and I've never read an error code on the ECU. Is there this option also for RS3 8Y?

I’ll have a look when I’m up and running……


Sent from my iPhone using Tapatalk
 

Doja cat

Well-Known Member
I received the new loom for the GTS Black from racechip yesterday, paid the princely sum of 15euro, only thing is to decide to install it! Had it just over a Yr for my previous car and never bothered lol.
The chip software is managed OTA via the app.

1652341271742.png
 

Doja cat

Well-Known Member
I got a stock (non valid) 0-60 dragy run today (low satellites?) of 3.67

Hopefully fit the GTS Black tomorrow see what it returns in the next few days.
If its poor I'll just ghost this thread like it never happened :tearsofjoy: :tearsofjoy: :tearsofjoy: :tearsofjoy: :tearsofjoy:
 

Doja cat

Well-Known Member
Not a brilliant result this morning but one very interesting observation....

0-60 marginal increase to 3.52
Screenshot_20220517-061127_dragy.png

Screenshot_20220517-061127_dragy.png


And 1/4m 11.82... however... its the speed at which it hit the 1/4 ... 121mph !!!!

This tells me the racechip is more focused top end when moving.. not lower speed.
Screenshot_20220517-061145_dragy.png




So I got to use the racechip I've had for more than a year now, it will stay on for the time being see how the jb4 performs but mainly hold out for ecu unlock.

Don't buy a racechip if traffic light sprints are your thing!
Screenshot_20220517-061145_dragy.png
 

Doja cat

Well-Known Member
Just to add, launch grip this morning was worse than my stock run the other day, had some slip, it has been horrible rain last couple of days.

I'll try again after a good few days of dry
 

Doja cat

Well-Known Member
Better results today (sort of)

Again, low satellites for the 1/4 @ 11.47 at 121 mph (who do I talk to to get the satellites to orbit higher?)
Screenshot_20220518-060130_dragy.png


and 0-60 @ 3.42 with that +2% slope, I would say that's decent..
Screenshot_20220518-060113_dragy.png
 

8YARWY

Translating gobbledygook
Better results today (sort of)

Again, low satellites for the 1/4 @ 11.47 at 121 mph (who do I talk to to get the satellites to orbit higher?)
View attachment 254442

and 0-60 @ 3.42 with that +2% slope, I would say that's decent..
View attachment 254443

Hmmm interesting.

The new harness is going out from the USA on Friday so should have it Tuesday hopefully.

Been a delay on electrical connectors.


Sent from my iPhone using Tapatalk
 

Doja cat

Well-Known Member
Will be very interesting to see your results from jb4, I'm using map 6 (out of 7 as feels better low down) in race
Screenshot_20220518-071657.png


What are the other modes for :tearsofjoy: :tearsofjoy: :tearsofjoy:
 

8YARWY

Translating gobbledygook
A little work to still be done.

While waiting for a new loom, I managed to source the correct connectors for the top boost sensor.

So decided to re pin it

846f89016f817a50081a9cd1e70acd80.jpg

660f45c9c30e52c103f8d99906b71775.jpg


Connected up and all seems ok.

Currently running on the Map 1 and doing some logging for George at Burger so he can check AFR etc…..

Car is running at 2psi over stock.


Sent from my iPhone using Tapatalk
 

Mike.46

Well-Known Member
Interesting, what was the stock boost? my guess would be 16psi
 

rngDeadeye

Active Member
My M4 isn't exactly a slouch but I drove (and am buying) a Tesla Model 3 Long-range which is fecking quick (probably not far off my M4) but only has a 0-60 of 4.2.

3.45 as above much hurt!

Can't wait to get the damn thing.
 
Couple of launches in Map 1.

Wet as it’s raining here.
4a5f02765929a8bbd4c8e497acc3d5d6.jpg



Sent from my iPhone using Tapatalk
That’s wet ? Damn that’s as fast as I’ve managed on dry which slipped just a tad!
What are the hp and tq claimed gains from map 1 ?
And a question, if you remove the JB4 (apart from them searching for something wrong for example, the ECU recording a higher boost level which will indicate a tune) can they see you’ve done anything if you returned everything to stock ?
And is it possible to add some pops and bang ? I don’t like the exaggerated ones at all but the 8Y has none (just on S and not in manual mode there is the gear change crackle (?) but no other noises) which is a shame IMO.
 

Terminator x

Registered User
I had a JFA unit on my RS4 as back then the ECU had not been cracked. I used to take it off the car every time it went to Audi and no one there batted an eyelid for the few years it went there before sold. No guarantees though I guess.

My attitude was that if they ever did say something I would just deny all knowledge.

TX.
 

8YARWY

Translating gobbledygook
That’s wet ? Damn that’s as fast as I’ve managed on dry which slipped just a tad!
What are the hp and tq claimed gains from map 1 ?
And a question, if you remove the JB4 (apart from them searching for something wrong for example, the ECU recording a higher boost level which will indicate a tune) can they see you’ve done anything if you returned everything to stock ?
And is it possible to add some pops and bang ? I don’t like the exaggerated ones at all but the 8Y has none (just on S and not in manual mode there is the gear change crackle (?) but no other noises) which is a shame IMO.

It was tramping and the rear was pushing all over the place

When I ran one on the Daza 8V I made 37bhp and 58 FT-LBs extra when I Dyno’d it on Unicorns RR, Which is notorious for being accurate.

The car does feel stronger though, and it tends to make the car a little louder, which all helps.

Regarding the Dealer, who knows really, I’ve seen Odis running suspicion checks when connected up to cars (my old remapped 8V being one) but nothing conclusive.

When I used Dyno spectrum to tune the 8V it did have a ECU logging function that was in the ECU, and I could access that just after a drive, it didn’t store huge amounts time wise but it’s capable of logging internally non the less.


Pops and bangs are ignition tables related so not possible with a JB4 as it has no control to Pull negative timing to create them.


Sent from my iPhone using Tapatalk
 

8YARWY

Translating gobbledygook
This is from the left

Revs / ECU psi / target increase / actual psi / pedal position

50a949a5d9b42021804f3bab8249d5a8.jpg


Highest ignition advance on this run was 18 deg.


Sent from my iPhone using Tapatalk
 

Doja cat

Well-Known Member
I didn't even think to compare the built in timer to dragy, but good result.

How are some reviewers getting 3.1 stock on the car timer LOL
 

8YARWY

Translating gobbledygook
I didn't even think to compare the built in timer to dragy, but good result.

How are some reviewers getting 3.1 stock on the car timer LOL

I think had it been dry I’d be at 3.1 as it was struggling to put the power down, the rear was shuffling the power around.


Sent from my iPhone using Tapatalk
 

Terminator x

Registered User
@8YARWY interesting that as Tom Wrigley (Porsche cup car racer) had a 500hp ish 8V (different turbo etc) and he was running 2.9s to 60 on a regular basis.

TX.
 

Mike.46

Well-Known Member
This is from the left

Revs / ECU psi / target increase / actual psi / pedal position

50a949a5d9b42021804f3bab8249d5a8.jpg


Highest ignition advance on this run was 18 deg.


Sent from my iPhone using Tapatalk
Appears to be adding 3psi/0.2 bar,
18 degrees ignition is good I would have thought, in my experience once you need to start retarding timing as you increase boost you gain best part of SFA.
I upped the lads RS3 engined Golf by 0.1 bar at a time, once I had to start retarding the ignition to stop det the inbuilt ecu logger said we wernt going any quicker on acceleration, still 100-200kph between 6 and 7 seconds depending on gear change is quick enough :)
 

Mike.46

Well-Known Member
I think had it been dry I’d be at 3.1 as it was struggling to put the power down, the rear was shuffling the power around.


Sent from my iPhone using Tapatalk
Sometimes that little bit of slip actually helps times
 

8YARWY

Translating gobbledygook
Appears to be adding 3psi/0.2 bar,
18 degrees ignition is good I would have thought, in my experience once you need to start retarding timing as you increase boost you gain best part of SFA.
I upped the lads RS3 engined Golf by 0.1 bar at a time, once I had to start retarding the ignition to stop det the inbuilt ecu logger said we wernt going any quicker on acceleration, still 100-200kph between 6 and 7 seconds depending on gear change is quick enough :)

Yes it seemed good, just a shame the car fumbled about on launch so much.

It’ll be interesting to see how it performs in the dry……


Sent from my iPhone using Tapatalk
 

Doja cat

Well-Known Member
Hahahaha..... gimme 1 minute........
 

betaone68

Registered User
Checking a car's performance increase by measuring 0-100 km/h does not seem to me to be the best tool. Especially when you are under 4 seconds. Much more significant is the 100-200 . But it seems to be understood that the car computer does not allow this. Even the 0-200 km/h would be more suitable as a comparison of original performance versus JB4.
 

Mike.46

Well-Known Member
Checking a car's performance increase by measuring 0-100 km/h does not seem to me to be the best tool. Especially when you are under 4 seconds. Much more significant is the 100-200 . But it seems to be understood that the car computer does not allow this. Even the 0-200 km/h would be more suitable as a comparison of original performance versus JB4.
Yes I agree, when I mapped the lads RS3/Golf I was able to log speed v time through the ecu to accurately measure acceleration and see what worked and what didnt, increasing boost worked until we had to start retarding timing, then we where 'robbing Peter to pay Paul' with no increase in performance

The 1/4 mile or as you say 0-200kph would probably be a better indication as it would lessen the effects of the initial launch.

I did similar years ago (too many years ago tbh) with a customer and his 911, he paid a lot to have it mapped on a spare ecu (when you could just plug and play them!) his car was quicker, stopwatch v digital speedo on the std ecu..................
 

8YARWY

Translating gobbledygook
Checking a car's performance increase by measuring 0-100 km/h does not seem to me to be the best tool. Especially when you are under 4 seconds. Much more significant is the 100-200 . But it seems to be understood that the car computer does not allow this. Even the 0-200 km/h would be more suitable as a comparison of original performance versus JB4.

Lol we live in the Uk so having access to doing those sorts of speeds isn’t possible legally.

Whereas a 0-60 sprint is possible in the right area, without ruffling too many feathers.


Sent from my iPhone using Tapatalk
 

8YARWY

Translating gobbledygook
Boost upped slightly for next logging run…..

Car is starting to feel very strong now on boost, it’ll be on a Rolling Road soon once I can get it in.


Sent from my iPhone using Tapatalk
 
Top