Nick's 1991 200q Project - QUAT44RO

[amd is the best]

Also, the 200 is getting the windows tinted tomorrow. 50%. Pics will follow.

[amd is the best]

So I tried to up the boost again to 260 and no go. Made it to 250kpa. I have boost leak checked it a few times and there are no leaks. I am going to try closed loop boost control although I'd prefer it to work the way it currently is setup. I may try a manual controller as well.

[loxxrider]

I bumped mine up to 250 tonight as well It hit 253 or something (~22psi). I still need a lot more. I also think I need to run some more timing. Care to share your timing? I have two degrees pulled out of everything from 200kpa up just until I hit the dyno, but my car is pulling a few degrees of timing in addition to that (I think because my MAT sensor reads high).

[amd is the best]

So I put the car in closed loop boost control and it works as it should. Should I just keep it this way or is there something I could change in those P/I/D settings to make the open loop control work correctly?

Nice Chris! I feel like these engines just need a ton of boost to be happy, lol. I have mine up to ~265kpa and! it feels ridiculous. Here's what my timing map looks like:



Mine pulls a decent amount of timing too because the stock IC is probably hating life and IAT's start to climb up. I have not been to the dyno yet and am not sure how much more timing I can throw at it. Right now the plugs come out clean, no detonation. Then again it hasn't gone much over 50 degrees here though. New IC will help me out a bit.

On a side note, I was involved in my first setup roll race last night and the outcome was in my favor . I'll have videos when they are made available to me. The car was a 2009 WRX with a 3" turbo back exhaust, catless up pipe, walbro 255, intake and a custom tune. Last year he trapped 105mph in the quarter mile and that was before the tune and up pipe. He said that similar setups will trap in the 108-111 range (damn new cars running great times on stock turbos!).

He wasn't interested in a dig (probably a weak clutch) so we did a 40 roll and a 55ish roll and both times I pretty much walked him

More to come!

[Marc]

you've got a pretty huge jump in your timing map between 200 and 320 kpa. If it were me, I'd add at least one cell in between that range.

[amd is the best]

Thanks for the tip Marc. I've been meaning to rearrange the timing map. Way too many fields below 100kpa.

Any idea about the boost control? Or should I just leave it like this?

[amd is the best]

amd is the best wrote:[/quote]

Thanks for the tip Marc. I've been meaning to rearrange the timing map. Way too many fields below 100kpa.

Any idea about the boost control? Or should I just leave it like this?[/quote]


I think you have your terms reversed when you are talking about how you are setting up boost control. I think what you are saying is that "open loop" is what you just switched to and the boost builds fine, when you change to closed loop is when you cant get it to build over 250. Closed loop is much harder to tune, open loop is pretty much a guarantee you can build as much boost as your turbo is mechanically limited to provide.

Running open loop boost control works just fine. you'll get small variations in boost due to changes in altitude, but your boost curve should be very stable.

[amd is the best]

Yeah, sorry. Looks like I switched them around. I'll just leave it as is then.

Also, I thought I'd let you know. The launch control is working fine now. I hadn't checked it since I flashed the firmware to the newer version and now it works perfectly. Not sure if that makes any sense though....

[chaloux]

Vids of launch control in action pls! lol.

[amd is the best]

Vids of launch control in action pls! lol.

I still have to wire it to the clutch petal, but I'll be sure to get a video. I am kind of scared of breaking another input shaft though, lol.

[chaloux]

Yeah, don't blame you. I'll settle for it just firing and not launching.

[loxxrider]

Holy crap that timing map doesn't help me at all lol. Definitely rearrange that thing so you have some more cells above 100kPa. I can post mine if you'd like. I'm running quite a bit more timing than you up top... like 7 degrees more in some places and thats with it backed off a bit just in case.

I think 265 is pretty much right on the ragged edge of where we need to be in terms of power on completely stock bottom ends. I haven't even put ARP's in mine yet lol. AND my stock clutch is still holding fine. I really need to source an 01E soon tho so if you know about a wide first 01E for a good price let me know!

[amd is the best]

Holy crap that timing map doesn't help me at all lol. Definitely rearrange that thing so you have some more cells above 100kPa. I can post mine if you'd like. I'm running quite a bit more timing than you up top... like 7 degrees more in some places and thats with it backed off a bit just in case.

I think 265 is pretty much right on the ragged edge of where we need to be in terms of power on completely stock bottom ends. I haven't even put ARP's in mine yet lol. AND my stock clutch is still holding fine. I really need to source an 01E soon tho so if you know about a wide first 01E for a good price let me know!

Damn, that just tells me that I need to start throwing some more timing at it! I'll rearrange it but it's a linear interpolation between the cells so it's really not hurting anything as is, it'd just look a bit better. Post yours man, I'd love to take a look.

265 feels really good and if judging by last nights runs the 200 may be a 108-112 trap speed. Just a guess but I'd say its at least 300+awhp as it sits probably putting it somewhere around 375-400ish crank...which is the rumored limit.

01E and good price never come in the same sentence, lol. I completely rebuilt my S4's two years ago and spend nearly $4,000 in parts alone! Here's a few pics (because we all love pics):













New parts (plus the full JHM rebuild and 3-4 shift collar which are not pictured):

[loxxrider]

Yeah, those are a lot of new and expensive parts... I can see why that would get expensive. I really don't want to have to drop more than 1k for a good, wide 01E though. If I score one at the junkyard, it will be under $200 lol. Haven't seen an S4 yet though. I think Mark (with the racing coupe thing on this forum) or someone else scored two 01E's for free one time. Gotta get lucky!

Anyway, I was more under the impression that most people hit the limit at more like 400 whp, not 400 chp. That guy Anthony over at Audizine has his S4 avant running like 370 on stock manifold and stock bottom end, so thats testament to it in part. I'd be willing to bet you are making a good bit more over 300 whp considering the weight of the car. I can easily hang with or beat a local 312 whp, 3000 lb Gti, so that tells you something for sure.

VEMStune is on my other comp, but here is the timing map written out. This isn't the one that has two degrees taken out above 200 kPa, so watch out for that.

Attachment ( 25486 ) : timing map.JPG

[amd is the best]

There are good deals to be found but buying a used transmission always scares me. People are shady or may just not know. You're buying a sealed unit which may be junk inside... And you don't know until you've spent hours changing it out. That's why I went the rebuild option, peace of mind. When my 016 poops out I'll rebuild my spare 01E and it'll be good.

I've got to get this thing on a dyno then we'll know for sure. Just waiting for the damn IC core. I've calculated by weight (~3,700) and trap speed (~116) in my S4 that it is around 400awhp. The 200 weighs a bit less and may be in the 110mph range putting it at maybe 325-350awhp. Again, this is ALL speculation and could be COMPLETELY off, lol. Either way, I wish my S4 was running so I could race the two of them I'll be fixing that in the next few months.

Wow, that is a TON more timing! I'll have to play a little bit more with it. Thanks for sharing!

[loxxrider]

Thats more along the lines of what I'm thinking too. Anyway, ya... it is indeed a lot more. Marc did take a look at it though and didn't have any problems with it and of course my car has been running on it minus two degrees of timing above 200 kPa and its been fine so far...

[amd is the best]

Just out of curiosity, what are your coolant temps like just cruising around?

[loxxrider]

I'll let you know when I can get to my other comp later tonight

[amd is the best]

Quick clip of the launch control per request: http://www.youtube.com/watch?v=KXpfW_AzATg


Link to video

[chaloux]

HOLY JEBUS.... I love launch control. That is just too damn cool.

[WOMBAT]

Bwahahaha yess!

[EDIGREG]

sick. what are your settings? I set it up and played with it a bit but kept the revs low, around 3k or so IIRC. Still need to wire up the clutch switch as well.

[loxxrider]

you need to up the RPMs Ed

[EDIGREG]

yes yes I know...Didn't want to break anything I will mess with it more when I get the new turbo and clutch installed.

[pilihp2]

so utterly sick.