Using EV6 Injetors on ATW

[xattica]

I understand that the ATW used EV12 injectors. Can I use EV6 injectors. The specific injector is 06A906031BA (Bosch: 0280156061). Any issue having the fuel released slightly higher ? Mi current setup is a K04-15 with Giac K05 file. I think the car needs more fuel. Currently is a 5 bars. I want to change to 317 injectors @ 3.6-3.8 bars.

Thanks,

X

[xattica]

Help!

[034Motorsport]

Any particular reason you don't want to move to the TT225 injectors that are made properly for your manifold and motor?

[xattica]

In reality I was looking for TT180 injectors. Never found it. So I get the Bosch: 0280156061.

[034Motorsport]

Well, anyways, theres no reason you can't use the traditional style injectors. Theres no problem with them spraying 1/4" higher in the manifold; it won't change anything. We use that style injector you asked about often with the ATW and TT225, etc. You'll just need to worry about the heights between the o-rings; not where the actual fuel gets sprayed.

I mentioned the 225 injectors since they are "factory" style replacements and some folks like that extra bit sticking out.

[xattica]

Well I never found any good deal for any of the TT EV12 (180 or 225). About the orings, top or bottom? Any recommendation? Thanks a lot for your input.

X

[xattica]

Well. The injectors fit very well. EV6 are shorter, more than I though. See on pics:


On the rail:

[Papa Stone]

so did your problem improved

[xattica]

Good so far. Very weird and erratic from 2-3k rpms. *Maybe tuning or I need to disconnect the battery to reset old injector values.
At least not pinging. But I drove just few miles.
Thanks.

[bomber495]

I was thinking about buying 550cc EV6 Injectors that were purchased for a AEB engine on my ATW Engine (2000 A4 1.8T). I am soon going to upgrade my ECU and I found the injectors and a 225 fuel pump purchased for a AEB Engine on craigslist for 200$ for all. Can probably even talk him down further. How did the injectors end up working for you on your ATW? Do you think a AEB 225 fuel pump will work on a ATW engine as well? Please help me out!

[poppachulo]

My '01 AWM came stock with EV6 style injectors and I switched to EV12 tt225 injectors when I went APR stage 3. I recently pulled the injectors to switch the o-rings due to some seepage after 50k of use and noticed that the two outer intake valves were slightly coated in carbon (especially the outer edges of these two valves) and the center intake valve was spit shine clean.

I'm guessing that the spray pattern with the EV12 on a car that came with stock EV6 injectors is less than ideal due to the reduced distance between the injector nozzle and the 3 intake valves. It seems that either a wider spray pattern is needed or the injector needs to be spaced away from the intake valves to allow for the spray to propagate in width.

Having said that, I recently upgraded to APR stage 3+ and am back to EV6 APR super-secret (read:Bosch) injectors and Holy Sh!t I can't believe how much smoother the idle is despite the injectors increasing in size. It was immediately noticeable that the idle and part throttle were smoother. I understand that there are some other variables at play here, but I really believe that going back to the proper spray pattern has improved things a bit.

[walky_talky20]

Maybe I'm missing something, but aren't the ATW and AWM manifolds the same? And the heads are certainly the same too. So is there any difference at all here other than just different injectors?

I don't see how anything is physically different as far as flow or injector seating/depth between the ATW and AWM to explain any problems here. Feel free to correct me, I might be missing something obvious.

[M-Hood]

ATW and AWM should be the same since they use the same IM.

[walky_talky20]

So EV6 and EV12 injectors are both factory application for the ATW/AWM small-port setup. Interesting.

[poppachulo]

ATW and AWM definitely have the same heads and IMs but different injectors.

I'm not too well informed on the rest of the 1.8t engine codes besides the B5 1.8ts, but I believe that ATW is the only longitudinal small-port motor with EV12 injectors and that AWM, AMB, Etc. are all EV6 injectors.

Here's a list of some OEM EV12 injectors:
OEM ATW injectors EV12 242cc 06B 133 551 B / 0 280 155 825
Audi TT 180hp injectors EV12 297cc 06A 906 031 S / 0 280 155 897
Audi TT 180hp injectors EV6 297cc 06A 906 031 BA / 0 280 156 061
Audi TT 225hp injectors EV12 368cc 06A 906 031 J / 0 280 155 892/893
Audi TT 225hp injectors EV6 368cc 06A 906 031 BC / 0 280 156 063/064

It's interesting that the tt225 came with both EV6 and EV12 injectors and that APR chose to spec the EV12s for my AWM despite the fact that the AWM has EV6s stock. I think that the EV6 tt injectors came out on the later models and that APR had already designed & tested around the EV12.

[M-Hood]

ATW


But you can use the shorter nose injectors on the ATW, that is pretty much what everyone ends up running anyway once they go to bigger injectors.

[walky_talky20]

Thanks for the info Mike and poppachulo. For some reason I find this fascinating.