20v turbo manifolds

[bitterchild]

Anyone know any good t25 flange 20v turbo manifolds? I've been looking at ATP's cast ext. wg piece but I also found an SS int. piece. TIA

[skene]

if you found it.... what's the problem?

[bitterchild]

looking for other options and possibly any first hand input into pros and cons. As in which will spool faster w/o dieing on me.

[DarkkstaR]

Which software were you planning on running with a T-25?

I am looking for advice myself

To let you in on my future plan I want to see if I can get myself a manifold and run either a T-28 or GT28RS, get some custom wideband tuning or something though a laptop and some programs I've gotten a hold of, and start with T-28 software and change it a bit, modify the boost and fuel levels to make way for whatever turbo I'd put to it. problem is I have a tiptronic so I would have to swap trannys or just build my transmission.

It depends on money and practicality, I'd have to research more. If I don't do the above I will probably have my Ko3 rebuilt and ported, and/or use a different compressor wheel (E05 at the least).

Either way it depends on money and my transmission...I just hope it can handle what I hand to it honestly.

[bitterchild]

I will be running a vafc piggyback on a giac 1bar k03 program. No wideband, just voltage meter right off the primary O2. injectors will most likely be ford 440ccs. If anybody has a set of 8 and wants to break me 4 please do let me know. Which manifold were you looking at? I was going to go w/ a stainless internal piece I canget for $350. I have heard that ATP's cast piece with the ext WG does spool a bit faster but its $400, heavier and would require blocking off the ext wg port. I have a couple t25s just sitting around so I was going to run one until I can find a t28 to rebuild. gt28rs is too much money for this purpose. Wonderful fit though. After going through all the k03/k03s/k04/e05 I've come to the conclusion that they suck. Its nice they bolt right in but that's about it. Time for a real garrett. Tell me about the fuel management programs you've got. I was looking into that but didn't find anything that fit the bill. Ghetto vafc hack usually doesn't do too badly.

[DarkkstaR]

I have some sloppy programs that I've gotten off the GIAC and APR sites...no idea if they even work.

http://www.goapr.com/Audi/products/vtune.html
http://www.giacusa.com - right on the front page

Does a VAFC actually work on our ECUs...accurately? I've never seen it done.

As for manifolds I am really stuck on what to use...I've found a few people that can make me something up and one on ebay but it doesn't look promising. If you'd be willing to share something that would bolt to a T-28 then I'd greatly appreciate. You are right the GT28RS is steep.

No idea on internal and external wastegate yet then, I'll need to really decide what I am going to do before I determine. Probably whatever is cheaper honestly. What are your plans when you get to a T-28? Any links to manifolds and some place to get a T-28?

You think it'd be easy for a few of my honda friends that are amazing with tuning VAFCs to tune my car with one after I get the system setup? I have access to borrow a wideband setup. Would there be any advantage to running GIAC t-28 software instead of using a VAFC? What's the ghetto VAFC hack? Just wire it up like any other car or is there a trick to doing it? Have people successfully run VAFCs on our cars?

Thanks a ton.

[bitterchild]

Thanks for the links. I have no reason to think why a vafc wouldn't "work" on our bosch systems. I know one guy from induktion in MD that runs a safc piggyback to control some larger injectors. I haven't really talked to matt about it b/c he's always being asked stupid questions by all kinds of people and I don't want to bother him like that. I don't see how it would be much different than using the vafc to run larger injectors on a honda engine. Here's a link to an ebay auction from the guy I've been talking to about the manifold.

http://cgi.ebay.com/ebaymotors/ws/eB...RK%3AMEWA%3AIT

It's the one pictured, t25/t28 inlet and in this auction its grouped w/ an fpr and a gt28rs. I've been trying to get some good underhood pictures to check fitment, I've gotten some good specs on the ATP piece but as I mentioned its cast and I'd have to block off the wastegate port. The ATP is also $400 compared to $350 for the one linked. I don't have anything against externals but I don't want to drop money on a big Tial if I don't have to. I don't see enough inefficiency in the current internal setup to justify that. I think you wouldn't find too many problems tuning the safc the way your friends tune their vafcs on the hondas. I personally was counting on that experience to get me along. I was considering buying the big blue bosch FI book but I'm thinking its not necessary. The term "vafc hack" as I've come to know it just means leaning out the map signal to be able to idle and otherwise run on big fat injectors. The safc should be able o work with a maf sensor and run a similar deal. With access to a dyno and wideband you should have no problems. I don't want to pick up another wideband just for this project though. In the end, I can get a t25 up and running for less than one of the fpr k04 kits and with a little extra for a t28 and some used ford injectors I can well... you know. What's the issue w/ your transmission?

[skene]

Originally posted by DarkkstaR
Which software were you planning on running with a T-25?

problem is I have a tiptronic so I would have to swap trannys or just build my transmission.

Swap transmissions? You will need more than that because the Audi engines differ from Manual to Automatic. So you have to look into replacing your block. The spine on the two blocks are different.