B8 Ko4 owners follow up thread

[bb-tt]

Hey guys. Does anyone here have a DV+?

I had a feeling my Stock DV was going out (REV D) and I had a DV+ just sitting around from my k03 days.

I installed it and ran a log. Boost held just fine.

The thing I'm trying to figure out is the "Blow Off" sounds from the intake. Its more so like a high pitched "JDM" sound when I get off the throttle.

Does anyone have a video of what their car sounds like with a ko4 and the dv+?

I have dv+ with cts ko4 and have no blow off valve sound, but there is some funky swirling sounds that scared me at first thought turbo was bad. I have stock air filter box which may be muffling some of the sound compared to if you have a cold air intake. On my tt with mad max dv and modified air filter box it sounded like a blow off valve and i believe the dv+ is essentially the same thing as a mad max mod for the 1.8t.

[bb-tt]

Hi all- somewhat related but also a bit off topic. I’ve been trying out various oils in my Allroad and S4. gotten very nerdy with data and UOA reports from blackstone haha. I’ve run 8100 xcess 5-40 in my Allroad it’s entire life and it’s been. Cams looked amazing at 110k when I took a look. Also no consumption ever. Tried Redline 5-40 and honestly it is just too damn thick at operating temp. Car felt bogged down and i lost a few mpg. Tossed some 300v 5w-40 in, and holy hell. Gained back the mpg and the car feels rev happy as hell. My oil temps also decreased over 10f at 90mph. I kept thinking it was all in my head but I kept noticing how eager it felt. The double Esther race oil shizzz seems to be no joke. It’s also 0% shear to 392f which is higher than our motors will every produce. You can order it on FCP and have lifetime replacement. It’s $35 per 2L can (very expensive) but FCP replaces it free when you send the old stuff back lol. Thought I’d share. I’m a true believer in many things being snake oil but it feels like Motul 300v is not one of them. I’ll post a UOA after like 4-5k Miles. Seems like a good fit for a toasty K04 motor that gets “driven”


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have not had to change oil yet in the avant as when it was due had the oil consumption rebuild (thank you AoA) so just about ready in another 1000 miles debating what to run in it. Ran rotella t6 in the tt which worked well debating what to run in the avant.

[Linksman72]

I have dv+ with cts ko4 and have no blow off valve sound, but there is some funky swirling sounds that scared me at first thought turbo was bad. I have stock air filter box which may be muffling some of the sound compared to if you have a cold air intake. On my tt with mad max dv and modified air filter box it sounded like a blow off valve and i believe the dv+ is essentially the same thing as a mad max mod for the 1.8t.

I have the Ko4 with the go fast bits DV+ and it works great



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[Comfy Pursuit]

What cold air intake are guys running with a CTS K04? I currently have the carbon fiber kohlefaser lufttechnik intake system, but doesn’t fit like I want it to due to hose issues from the intake to the turbo. Any members running an open system or have suggestions for consideration?


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[hardfive]

Is there any value in a APR ko4 tune if I wanted to get a cheaper non-APR turbo? Long story.

I think APR would only put a tune on a car with an APR turbo right?

[A4x]

Is there any value in a APR ko4 tune if I wanted to get a cheaper non-APR turbo? Long story.

I think APR would only put a tune on a car with an APR turbo right?

I have the APR tune with the JHM turbo. The shop that flashed my car didn't care at all.

[vdubjetta02]

Is there any value in a APR ko4 tune if I wanted to get a cheaper non-APR turbo? Long story.

I think APR would only put a tune on a car with an APR turbo right?

Its just the price that changes.... if you run an APR k04 they reduce the cost of the tune for you, if it is another turbo they make you pay full price.... (Atleast that is how it works in CO)

[hardfive]

I have the APR tune with the JHM turbo. The shop that flashed my car didn't care at all.

Its just the price that changes.... if you run an APR k04 they reduce the cost of the tune for you, if it is another turbo they make you pay full price.... (Atleast that is how it works in CO)

Great news. Thanks guys.

[kayroccs]

Is anyone using a turbo blanket for their turbos? If so where did you buy them ?

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[earhythmic]

Is anyone using a turbo blanket for their turbos? If so where did you buy them ?

Sent from my ONEPLUS A5010 using Audizine mobile app

I’m running a PTP one that I got off someone here in the classifieds. Keep a fire extinguisher handy for the first test drive, all the smoke will freak you out.

[kayroccs]

I’m running a PTP one that I got off someone here in the classifieds. Keep a fire extinguisher handy for the first test drive, all the smoke will freak you out.

Thanks ill look into it.

[kayroccs]

Also, has anyone went from APR to another tune? what needs to be done since APR locks the ECU?

[muffinman92]

This is the one I am running

http://www.urotuning.com/CTS-Turbo-K...SABEgLcYPD_BwE

[Perry01]

How difficult is it to fit the blanket with the turbo installed?

[earhythmic]

How difficult is it to fit the blanket with the turbo installed?

It’s a PITA, but didn’t take more than ~20 minutes.

[red4life5]

IE’s guy has been on vacation and will be back in a week and I will get the dyno numbers for everyone. The car is a blast


2010 A4 S-Line Prestige

[A4x]

IE’s guy has been on vacation and will be back in a week and I will get the dyno numbers for everyone. The car is a blast

Was this a custom tune with logs and iterations, or a one flash deal?

Looking forward to your results!

[Perry01]

I believe he installed an eBay K04 and he drove it to IE’s shop in SLC for a dyno tune.

[red4life5]

I believe he installed an eBay K04 and he drove it to IE’s shop in SLC for a dyno tune.

You are correct. I am a beta before they release the file to the world


2010 A4 S-Line Prestige

[kayroccs]

You are correct. I am a beta before they release the file to the world


2010 A4 S-Line Prestige

Hey Red4life5,

Do you think they're releasing before spring 2019. This is only reason I haven't installed my K04 yet because I'm waiting on their tune.

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[Perry01]

You are correct. I am a beta before they release the file to the world

I was the K04 Beta 9 months ago. Your tune is probably based off of my file ;-)

[B1GW3AV3R]

If anyone wants a good K04 option I still highly recommend HPA's k04, I've been running it for about a year now without a single issue on APR's software running 93 I'm 6mt. Looking to do meth next and run 100 oct and then take her to the track and hopefully run some mid 12's. This has been a perfect blend of power and also a good daily for me.

[dapeople]

i am in the market for a K04 and looking towards the HPA kit, thanks for the 1year update and that you are still recomending this turbo. quick question, although this is not popular to do and im sure i wont be getting the full potential out of the turbo i wanted to see if anyone has installed a K04 (doesnt matter what brand) with the stock donp pipe?
the reason i want to do this is bc in Chicago, IL i have to pay $600 every two years to get APR or any other tuner to mess with the car so it passes emissions.

[weagle1856]

If anyone wants a good K04 option I still highly recommend HPA's k04, I've been running it for about a year now without a single issue on APR's software running 93 I'm 6mt. Looking to do meth next and run 100 oct and then take her to the track and hopefully run some mid 12's. This has been a perfect blend of power and also a good daily for me.

How many miles have you put on it?

[Comfy Pursuit]

I was the K04 Beta 9 months ago. Your tune is probably based off of my file ;-)

You’re the Hawaii guy I’ve heard about. So did this car get any mapping done in Utah at elevation? I’m also assuming you don’t have an e85 compatible model as they don’t yet have a file available.

[A20V200]

i am in the market for a K04 and looking towards the HPA kit, thanks for the 1year update and that you are still recomending this turbo. quick question, although this is not popular to do and im sure i wont be getting the full potential out of the turbo i wanted to see if anyone has installed a K04 (doesnt matter what brand) with the stock donp pipe?
the reason i want to do this is bc in Chicago, IL i have to pay $600 every two years to get APR or any other tuner to mess with the car so it passes emissions.

APR charges you that much? With UM the flashes or reflashes are FREE for the original buyer as well as any updates. If I have to go in for service, I just get charged by my tuner shop $85 for their time, but that involves a flash back to stock and reflash back to stage 2+

[A4x]

You wouldn't get charged each time for the price of the tune. You would only get charged whatever the shop wants for the few minutes it takes to flash the car. A lot of people are able to pass OBD emissions testing with APR software and running K04, I know I did.

[Nano909]

You wouldn't get charged each time for the price of the tune. You would only get charged whatever the shop wants for the few minutes it takes to flash the car. A lot of people are able to pass OBD emissions testing with APR software and running K04, I know I did.

So you passed emissions without going into stock mode?

[bb-tt]

You wouldn't get charged each time for the price of the tune. You would only get charged whatever the shop wants for the few minutes it takes to flash the car. A lot of people are able to pass OBD emissions testing with APR software and running K04, I know I did.

I passed emissions in Dallas with cts k04/hfc and ie tune. Readiness checks good in vcds.

[Perry01]

You’re the Hawaii guy I’ve heard about. So did this car get any mapping done in Utah at elevation? I’m also assuming you don’t have an e85 compatible model as they don’t yet have a file available.

My K04 file was written by IE’s lead engineer in SLC using their B8 A4. My vehicle was never in Utah. I emailed him numerous data logs to get my file dialed in for sea level.

Although my vehicle is flex-fuel compatible, E85 is not sold at the pumps in Hawaii so I was not interested in an E85 file.

[A4x]

So you passed emissions without going into stock mode?

I did use program switching to go back into stock mode. However I'm not sure this is needed. I have the same condition as bb-tt above, I noticed that all my readiness is passed in 93 octane mode as well.

[bb-tt]

My K04 file was written by IE’s lead engineer in SLC using their B8 A4. My vehicle was never in Utah. I emailed him numerous data logs to get my file dialed in for sea level.

Although my vehicle is flex-fuel compatible, E85 is not sold at the pumps in Hawaii so I was not interested in an E85 file.

I believe my file and several others on here were based on Perry's. Quite honestly have to thank Perry for taking the plunge and getting all the kinks worked out. The beta version tunes they have sent me have ran flawlessy. The car is my daily driver and it is perfectly suited to normal driving but has a smile factor when you want to drive like a moron or for that matter make a moron wonder why he just got left behind by station wagon.

[A4x]

Who is running the stock downpipe with K04? I am considering to put the stock downpipe back in to eliminate some drone I picked up with a Magnaflow muffler in place of the OEM muffler. I don't want to add any noticeable restriction or turbo lag. Here is a cutaway view of the downpipe resonator:

[bb-tt]

Who is running the stock downpipe with K04? I am considering to put the stock downpipe back in to eliminate some drone I picked up with a Magnaflow muffler in place of the OEM muffler. I don't want to add any noticeable restriction or turbo lag. Here is a cutaway view of the downpipe resonator:

My exhaust is stock after the hfc.

[BMWManiac]

Im running the IE performance exhaust with the last resonator and S4 exhaust.....no drone, barely hear the exhaust

[whats77inaname]

Who is running the stock downpipe with K04? I am considering to put the stock downpipe back in to eliminate some drone I picked up with a Magnaflow muffler in place of the OEM muffler. I don't want to add any noticeable restriction or turbo lag.

The stock cat/dp is the most restrictive part of the setup. Have you thought about swapping the magnaflow for a stock S4 exhaust?

Im running the IE performance exhaust with the last resonator and S4 exhaust.....no drone, barely hear the exhaust

You mean IE performance cat/downpipe and S4 exhaust or....?

[BMWManiac]

Yes, some peopke may not know that the IE performance exhaust removes the first resonator. Some folks that do the S4 conversion remove the 2nd resonator. I just wanted to clarify that i have a hfc + 2nd resonator + s4 exhaust

[Perry01]

I believe my file and several others on here were based on Perry's. Quite honestly have to thank Perry for taking the plunge and getting all the kinks worked out. The beta version tunes they have sent me have ran flawlessy. The car is my daily driver and it is perfectly suited to normal driving but has a smile factor when you want to drive like a moron or for that matter make a moron wonder why he just got left behind by station wagon.

I took the liberty and put your latest log into a couple of charts. Besides the two spikes in boost between 3500-4000 RPM, you boost looks very good. You hold 20 psi up to 6300 RPM and ~18 PSI all the way to 7000 RPM.



And you are flowing some serious air through your motor. 330 g/s is amazing.



That CTS Turbo K04 matched with IE software seems to be performing quite well.

[Nano909]

I'm using an EC 3 inch test pipe, to a CTS 3 inch non res downpipe to an S4 exhaust. No drone.

[A4x]

I took the liberty and put your latest log into a couple of charts. Besides the two spikes in boost between 3500-4000 RPM, you boost looks very good. You hold 20 psi up to 6300 RPM and ~18 PSI all the way to 7000 RPM.

And you are flowing some serious air through your motor. 330 g/s is amazing.

That CTS Turbo K04 matched with IE software seems to be performing quite well.

Any hesitation to accompany that overboost and MAF drop @ 3800 RPM?

I'm using an EC 3 inch test pipe, to a CTS 3 inch non res downpipe to an S4 exhaust. No drone.

So you are running the S4 center resonator and dual rear mufflers only? This is similar to my exhaust setup before I put the Magnaflow on, and there was very little drone (downpipe resonator was removed). I bet the stock A4 center resonator and rear muffler are extremely similar to the S4 cans. It was once I cut off the rear muffler I get some drone.

IGNORE GREEN AND RED CIRCLES IN DIAGRAM BELOW. Diagram is only to show the basic layout of an S4 stock exhaust.