APR suggest non apr K04s not a good idea

[flowhigh]

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[Zuzuwu]

How is the tune going to know what brand of turbo it is lol


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[schwiz23]

I don’t doubt that the tune is made for their K04 turbo. However, there are plenty of us with hybrid turbos running the APR tune with no issues, myself included. Based on logging the APR tune has been superior to the IE K04 tune with our hybrid turbos.


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[schwiz23]

Link: K04/Hybrid & Big Turbo Support Group
https://r.tapatalk.com/shareLink/top...ink_source=app


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[FourRingsC6]

Random question about running bigger turbo.
Both of my Avants are Automatic. One is ZF8 and other ZF6. Does anyone have an idea which one would hold added power better?


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[19birel]

A lot of the fastest cars on the forum used to run the old CTS K04 with the APR tune

[Tusktopia]

I tend to agree w Schwiz, I went for CTS k04 with the APR k04 tune. If they truly developed it for a specific turbo model then I doubt they would sell the tune separately. Seems like a money making scheme to me… I could be wrong.

[adamazing]

A lot of the fastest cars on the forum used to run the old CTS K04 with the APR tune

Was just coming to post this. CTS K04 + APR Tune has proven itself for years to be a solidly fast OTS solution.

[flowhigh]

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[Spawne32]

The APR hybrid is a K04, which is a K04, which is a K04. Anything that is using the original OE style K04 compressor wheels, with regard to wheel size and fin density/shape/design, will perform within 1% of the APR hybrid. While some of the different style compressor wheels thrown around on various hybrids from various brands flow differently, they do not flow differently enough that its outside of the design of the tune. Plus, like others have said, this is already proven.

[Perry01]

Few mentions of the "old" CTS K04 is there a difference than the 1070 I'm getting?.

Yes, there is a difference, the old CTS offering is a genuine Borg Warner K04, not a hybrid K04 like the 1070 and others (APR’s included).

[bb-tt]

The explanation I recall vaguely had to do with the spin/spool rate, different size components coupled with the algo. I don't deny either like schwiz that they developed the tune using the S3 variant. That's the thing I trust APR's r&d and didn't want to get some adverse effects on the account of me saving some money...a good deal of money.


Few mentions of the "old" CTS K04 is there a difference than the 1070 I'm getting?


Thanks for all the experiences guys...thumbs up to each of you!


Didn't notice the K04 X they have...hmmm... Jason11213 from a previous thread never got back to us on the swap from the K04 TR -1070.

the real explanation is that apr making like 1000% profit on the turbo so they will scare you into buying their ridiculously priced turbo when shane ran faster than anyone with an apr turbo on his ebay turbo and apr tune

[Jason11213]

The explanation I recall vaguely had to do with the spin/spool rate, different size components coupled with the algo. I don't deny either like schwiz that they developed the tune using the S3 variant. That's the thing I trust APR's r&d and didn't want to get some adverse effects on the account of me saving some money...a good deal of money.


Few mentions of the "old" CTS K04 is there a difference than the 1070 I'm getting?


Thanks for all the experiences guys...thumbs up to each of you!


Didn't notice the K04 X they have...hmmm... Jason11213 from a previous thread never got back to us on the swap from the K04 TR -1070.

I have the 1070-X on my workbench. Haven’t had time to pull the 1070 and swap it out but I’ll update everything when I do.

[flowhigh]

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[Spawne32]

Cuda could've been more graceful but his vids I've seen are pretty good for the real A4 diyers.

Well put on a K04 being a K04 haha...duly noted



I wouldn't doubt they are making good coin off the markup. The quality should be there tho.




Tell me about it. I've got the 1070 on the way and I ended up crushing and breaking my finger..it's gonna be at least a month..FML

The only real difference that has been noted is the outlet size on the compressor and possibly, with what little information we have, the AR size on the compressor side on the hybrids that use the K03 style compressor housing. But those are just guesses, no one has actually ever measured the AR size between the two. We debunked the maf g/s myth last year, it has never been a reliable method for measuring performance between different turbos. If the wheel sizes are the same as the genuine K04, it is a K04, plain and simple. Hybrid or no hybrid, it will perform virtually the same. Now there are plenty of hybrids out there like the Loba where the wheel sizes are larger, but for the most part, still within the range of being more than usable on a APR tune.

On some of the CHRA's I researched, even the biggest ones only offered a 10% increase in flow, which is not a very large difference in airflow in the grand scheme of things. Ultimately you will always get better power with a custom tune, but up until HPtuners, we had no real option for custom tuning unless you had a local tuner capable of doing such things. APR still to this day offers the best OTS K04 tune we can buy.

[Jayz691]

Yes, there is a difference, the old CTS offering is a genuine Borg Warner K04, not a hybrid K04 like the 1070 and others (APR’s included).

The CTS 1070 isn't really a hybrid. They use their own designed, k04 spec comp housing. Its not a machined k03 housing like others.

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[Spawne32]

The CTS 1070 isn't really a hybrid. They use their own designed, k04 spec comp housing. Its not a machined k03 housing like others.

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Take what CTS says with a grain of salt. It's a K03 style housing that's manufactured in china to have their logo on it that's machined out to fit a K04 size wheel. They didn't start selling those 1070 and 1070X hybrids until we started having discussions about the ebay turbo and various CHRA combinations here. Someone was paying close attention.

[Jason11213]

Take what CTS says with a grain of salt. It's a K03 style housing that's manufactured in china to have their logo on it that's machined out to fit a K04 size wheel. They didn't start selling those 1070 and 1070X hybrids until we started having discussions about the ebay turbo and various CHRA combinations here. Someone was paying close attention.

I should have taken some measurements of my IHI before I sold it next to the 1070-X. Or even the 1070 when I pull it. Since I just boxed up the IHI turbo and shipped it off I can tell the 1070-X seems much bigger and heavier than the K03. But I’m going off memory and don’t have weights or dimensions. Next person that swaps their K03 with the 1070 should do a side by side.

[flowhigh]

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[Spawne32]

I should have taken some measurements of my IHI before I sold it next to the 1070-X. Or even the 1070 when I pull it. Since I just boxed up the IHI turbo and shipped it off I can tell the 1070-X seems much bigger and heavier than the K03. But I’m going off memory and don’t have weights or dimensions. Next person that swaps their K03 with the 1070 should do a side by side.

The exhaust manifold for sure is different than our factory turbo. Argument can be made that it is larger, but it is definitely shifted to the right some to fit. This is true of basically all K04's however, not just the 1070.

[Jayz691]

I should have taken some measurements of my IHI before I sold it next to the 1070-X. Or even the 1070 when I pull it. Since I just boxed up the IHI turbo and shipped it off I can tell the 1070-X seems much bigger and heavier than the K03. But I’m going off memory and don’t have weights or dimensions. Next person that swaps their K03 with the 1070 should do a side by side.

I'm doing just that today.[ lmk know,what to measure, and we'll see. Like to kniw myself too. But I'm not pulling it apart, no time for that..

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Attachment 238046Attachment 238047

[Jayz691]

Take what CTS says with a grain of salt. It's a K03 style housing that's manufactured in china to have their logo on it that's machined out to fit a K04 size wheel. They didn't start selling those 1070 and 1070X hybrids until we started having discussions about the ebay turbo and various CHRA combinations here. Someone was paying close attention.

Not really watching AZ, lol. They used to do the genuine BW k04, but theyre harder to get now, in bulk. Can still buy them, but theyre not the only ones with this issue. I was talking to Xman turbos, and they said the same. Prices are up, and supply is down. They used to sell modified 064's also, but not so much anymore cuz of cost. And theyre a UK based company. They had to do something to stay competituve with the othe $1500ish options. And a new housing is better than machining a smaller one.

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[flowhigh]

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[Jayz691]

Jay, nice to know a fellow azn'r installing the 1070. What's your tune situation?

Running Motoza k04 tune. Currently stage 2, so was only $140 to upgrade.

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[bb-tt]

I should have taken some measurements of my IHI before I sold it next to the 1070-X. Or even the 1070 when I pull it. Since I just boxed up the IHI turbo and shipped it off I can tell the 1070-X seems much bigger and heavier than the K03. But I’m going off memory and don’t have weights or dimensions. Next person that swaps their K03 with the 1070 should do a side by side.

what measurements do you want ihi sitting on shelve in garage

- - - Updated - - -

Running Motoza k04 tune. Currently stage 2, so was only $140 to upgrade.

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Any logs?

[Perry01]

The CTS 1070 isn't really a hybrid. They use their own designed, k04 spec comp housing. Its not a machined k03 housing like others.

Ah, yes, it is.

edit: If the turbo has a housing that is not from a BW K04 (there are quite a few out there) but has a K04 spec’d wheel, it is a hybrid K04. Some hybrids have proven to perform well but may need wastegate adjustment before installation.

[Spawne32]

Not really watching AZ, lol. They used to do the genuine BW k04, but theyre harder to get now, in bulk. Can still buy them, but theyre not the only ones with this issue. I was talking to Xman turbos, and they said the same. Prices are up, and supply is down. They used to sell modified 064's also, but not so much anymore cuz of cost. And theyre a UK based company. They had to do something to stay competituve with the othe $1500ish options. And a new housing is better than machining a smaller one.

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No one knows that the new housing is any different than the machined K03. The inlets and outlets measure the same size. The AR's appear no different.

[Jayz691]

Well, heres a side by side with my k03(i have a b7). One other nice thing is it don't have a reg muffler on it, its smooth inside. No cutouts like factory outlet. Short of pulling it apart and measuring, it def looks bigger on both sides. Plus, think about it. If your gonna have housings made to your spec, why would you have them made smaller, and then machine it?? Don't make sense.. I know theres lots of naysayers here, but def look a bit different...0702211352.jpg0702211352a.jpg0702211353.jpg0702211353a.jpg

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[Spawne32]

That's a 1070X? That's interesting, because I have their K04 hybrid and the outlet was identical to the K03. Even has the turbo muffler and the 1.75" hose fits right over it.

[unmarkedA4]

I should have taken some measurements of my IHI before I sold it next to the 1070-X. Or even the 1070 when I pull it. Since I just boxed up the IHI turbo and shipped it off I can tell the 1070-X seems much bigger and heavier than the K03. But I’m going off memory and don’t have weights or dimensions. Next person that swaps their K03 with the 1070 should do a side by side.

It is bigger. It’s bigger then the jhm k04r
I had a hard time installing it. Actually had to take the lower turbo bolts out that the manifold sits on. I didn’t have to do that with jhm ko4r

I’m trapping 293g/s on 91 apr tune. This 1070x is the shit


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[Spawne32]

It is bigger. It’s bigger then the jhm k04r
I had a hard time installing it. Actually had to take the lower turbo bolts out that the manifold sits on. I didn’t have to do that with jhm ko4r

I’m trapping 293g/s on 91 apr tune. This 1070x is the shit


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293g/s is still lower than the genuine K04 historically speaking, but like I said do not go exclusively by the maf values. The CTS K04 I have has only netted just barely 270g/s while others are seeing more, yet we post similar 1/4 mile times and trap speeds. Get it on a dyno or do some dragy runs and see what it puts down, that will tell you the true story.

[Perry01]

I’m trapping 293g/s on 91 apr tune. This 1070x is the shit

Air flow isn’t necessarily an accurate measurement of power. Trap speed is. What are trapping in the 1/4 mile?

oops, Spawne beat me to it…..

[unmarkedA4]

I’ll be ordering a draggy. I’ll get back to you


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[Jayz691]

That's a 1070X? That's interesting, because I have their K04 hybrid and the outlet was identical to the K03. Even has the turbo muffler and the 1.75" hose fits right over it.

No, its the k04 1070. It don't have the muffler inside like the stick one. Its smooth right into the compressor housing.

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[Jayz691]

It is bigger. It’s bigger then the jhm k04r
I had a hard time installing it. Actually had to take the lower turbo bolts out that the manifold sits on. I didn’t have to do that with jhm ko4r

I’m trapping 293g/s on 91 apr tune. This 1070x is the shit


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Thats because the flange is too big, I found that out today. Factory turbo is about 50mm tall, the 1070(and prob 1070x) is 53mm. Had to do a little modification, lol.

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[flowhigh]

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[Jayz691]

Seriously? ...do tell. They advertise it as a complete drop in. Now I have to do some grinding? Hope this doesn't effect seating.

No, won't affect seating. Now bear in mind, I have a b7, so may be drop in on the b8. On the b7 there's 2 knubs on the head, where the heat shield mounts. Thats where it was hitting, on the top of the flange. So ground some off the head(knubs) and little off the flange. Barely notice, just took a little time. Maybe the flange is bigger on the IHI? If someone has one laying around, measure the height of the flange. My k03 was 50mm, CTS is 53mm.

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[Jayz691]

Funny, no comments yet on pics I posted, showing an obvious difference in size???

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[schwiz23]

Funny, no comments yet on pics I posted, showing an obvious difference in size???

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Looks the same to me.


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[flowhigh]

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