94 BEGI s4, 2860rs, MSPNP, 10+psi
 

Here is what happened today. Went to a shop to get dyno'd, see where I was at, make sure it was safe and see if I could get a little more.

BEGI installed the S4 system with the 2860rs, internal wg, MSPNP, ebc, 2 1/2" enthuza, 550 rx7 injectors.

At BEGI they ran it on spring only and using narrowband. Got 217 whp at 10psi, 106 degree weather and with a little boost creep. Full boost was available at 4000 rpm.

NOW: EBC made a big difference in spool Full boost at 3400-3500rpm. Boost is overshooting some around 4-5K rpms but settles back to 10. Might be an issue with the ebc. I'm going to check it out.

Anyway, drum roll please...

241 rwhp and 211 lbs of torque on a Mustang dyno! I'm a happy boy at just over 10psi. That's pretty nice power at a reasonable PSI on a daily driver. The dyno guy lifted very early on the 1st run to see where he was at. Dug a little deeper the 2nd. Ran it to 6900 rpm the final run. Each run was very consistent. I was getting just a little rich at the top end but that's what I had in my AFR tables just to be on the safe side.

Attachment 212316

When I figure out the overboost issue I'll crank it up a couple more psi!

Now if I could just fix my idle bounce.

that's really good on a mustang at that psi. Did they tune both spark and fuel?

John Doe,

They didn't do squat! These were the baselines they put down for me! They tried to up the boost but it was getting some weirdness from the EBC. Overboosting and then settling back to 10psi. I said 10+ psi since we don't know exactly where it was. When we got the numbers from the baseline and everything looked safe, the tuner and I looked at the maps and said "the hell with it. It's about as good as it gets right now." The only changes we made was a little less richening at the top end but we didn't do any more full run pulls. All it cost me was the base price hookup and baseline runs. No tuning time.

When I picked the car up from BEGI it wasn't doing the overboost thing. I've been working on the suspension, washerbottle and some other stuff that's all right around the EBC. I don't know if I have a wiring issue now - cut, grounded wire, etc. - or if maybe the sending lines have gotten pinched. Gotta track it down.

Like I said, I'm a happy boy with those #'s on a mustang.

And I'll say I'm happy to be starting with some of your MSQ.:eek5:

read it wrong.

I hope mine makes similar #'s. It should with the 3" exhuast, 99 head, and slight overbore.

Congrats. I'd raise boost just a hair to put it right at 250whp and leave it there forever.

Hustler,

With everything you have in your motor you should make another 100hp! If you only make 250 something is wrong. You've got bigger exhaust, pistons, rods, better head, etc. Your's should be very safe to what, 18 psi?

Mines a stock 94 motor and I have to say I'm extremely comfortable with those numbers on it. Once the EBC issue gets worked out and I get the Knocksense in I'll add the extra psi or two. The torque curve is a thing of beauty just the way it is! Really appreciate that in my daily driving.

Now I've got to fab a splitter/ undertray. 1st track day is next Tuesday. Another a week after that. Yee Haw!

Nice numbers!

God I need to install my turbo.

That looks great man. I hope to do well with my new turbo, ended up buying a nice new one with a warranty. (Center section only) A T3 60 trim, shooting for 300 rwhp. Once you get the EBC issues worked out ( I have issues as well) it should be a beast.

that looks good, with a very useable tq curve. are you sure the boost creep is the ebc and not a mechanical issue....i would think its from turbo being un-ported with a small wg flapper, but thats based completely on past subaru experiences....congrats, regardless...

cjernigan, your avatar pic, is it the northern lights?

Nice numbers!

Congrats!! VERY nice numbers!! I'd be happy with that for sure on a stock longblock!!!

begi does port the wastegate

Yes indeed. Random picture from google though.

it's why we log our pulls :)

:werd:

so in this case it would be equally accurate to say "5+ psi"? ;)

OK. I've gone over the logs. Also read up on EBC in the Ms manual. What was happening was boost overshoot. DIY talks about this in the manual. As you can see by the torque curve, the car really likes it!

When full boost would come on it would overshoot to 12.5 psi. This settles back down to 10psi by 5500 rpms. Essentially it would run 12.5 psi from 3600 to 4000rpms and a gradual taper back to 10psi by 5500. Explains the W I D E and flat torque curve. ( at least to my newb way of thinking. )

At the top end it's at 10psi so the hp numbers are accurate. You can tune overshoot out on megasquirt, but I'm not sure I want to! As the chart shows, the car really likes it in the mid range. This car really pulls hard mid range which is where I'm using it since it's a dd car. Any opinions? The 12.5psi overboost bad idea?

then you made 241rwhp at 10psi :)

you simply need to tune your duty cycle targets table....

Do I need to or is the overshoot to 12.5 a good thing in beefing up the mid range? Don't want to damage anything if it's not safe but that midrange power is kinda nice.

Any yes, BEGI does port the wg.

we have lower compression pistons than other years I believe so you'd probably be safe with even a little more. Why not tune it for 12.5 all the way to redline?

post your boost plot on your log....doesn't look bad to me...but if 12.5psi was held to redline..... ;)

I'm agreeing with Brain. I'm not sure on my DD car I want to start pushing limits. Don't need 260hp. Not yet anyway!

how much wheel torque blows up transmissions again? 220wtq?

Good thing 6 spd trannies can be had relatively cheap and bolt right up!

I'm not sure what the whtq tranny threshold is, but we totally ate 2nd gear in mine earlier this year. It exploded on the AutoX course while on a steady accell pull in 2nd. 232wtq and sticky tires will do it for sure.

Yay we got bots here! :hustler:

That is a badass torque curve. Take a video so we can see how the response is.

Yes, vidz please. I have not seen an S4 in action yet.

LOL at the Bot's user name "haohaoaiziji". It's Mandarin (pinyin) for good-good-love-yourself. :bowrofl:

lolol

I'm running 263wtq and pauls machine is just about the same as mine. No problems with trans yet.


EDIT: i didnt realize that this was a resurrected thread. My bad.

Old thread shmold thread. I'm always happy to talk about my car!:giggle:

That fat middle makes me smile still! I'm still set up to overboost to 12psi early and backing off to 10psi over 5500. The car feels more like a big motor than a turbo. Spools pretty good for the potato.

It's amazing how much smoother the power comes on than in the 02 Saab Viggen I had before this. That car felt like the classic laggy cars of old. Nothing, nothing, nothing, HOLY CRAP!

my old vw went from 105lb/ft to 480lb/ft in like 400rpm. lol

lmfao

it was soooooooooooooooooooo hard to drive. It had a journal bearing t04e, thick copper head gasket, and a ghetto EIP tuning e-prom. You had to roll into boost or it would backfire and buck. Basically I'd either short shift every gear in traffic, or commit to 4k rpm or higher. I've never seen a line so close to vertical on a dyno. I had serious tire smoking issues.

Adding Haltech changed that...after a 4-month install.
I looked kind of like this:
http://www.andymohrlant.com/turbo/dyno20psi341hp.jpg

http://www.vr6dynos.com/JPG/12vvr6t404whp.jpg
there's a good 300lb/ft in 500rpm

WOW! That is a horrifying dyno plot. Ouch. VW's are cool but crap. Sad how they have become so unreliable over the last 25 years.

I'm going to resurrect this thread yet again. Where'd you go cueball? And how much was that base hookup and run price? I haven't dyno'd mine yet. I'm a little scared its going to be about 150hp or something depressing like that.

Curly,

I went to Fast Specialties in Vancouver WA. They had a Mustang dyno. The tuner has worked some with Megasquirt. Was the only guy I could find in our area with MS experience. They are primarily a Ford shop but they work on all sorts of stuff. The hookup and 3 pulls was around $100.

They put mine up, made the 3 pulls, played with the tuning for another 1/2 hour and only charged me for the basic 3 pulls. They didn't change much and thought I was putting out as much power on the stock motor and pump gas as they were comfortable with.

I talked with most of the Dyno's around here. I'm not sure if Fast was the best but they were pretty realistic, not snobby, not ricey and had some fun cars around. One outfit openly scoffed at the MS. Thought it sucked and said so. Gee, suprised they didn't get my business?!? Douchebag Suburu shop.
FAST Specialties, LLC / Vancouver, WA / (360) 213-2781 / (877) 567-FAST - Home

cueball1,

What a/r is yer 2860?

:rofl:

I apologize in advance for necro-posting, but I'm doing some research and this dyno plot is fantastic, and have the same question as Jason: what ar?

Well since its been necro'd already.. i'm about to swap in a 1.8 this winter and am looking at turbo setups. This looks orgasmic. I forsee 2860 in my future. in for more details if cueball is still around ;)

having run both a 2860rs and a 2871-go for a 2871.

the spool is nearly the same (100-150rpm depending on the day) and the 2871 has a much larger sweet spot.

Well, he sold his billiards shop here in Portland, as his wife's job moved her closer to head quarters in Idaho...I wanna say Boise.

Since then, he's been in a depressed state of mind as he quickly realized any and all tracks are at a minimum 6 hours away.

So I suppose his name should be changed to "1", as he's no longer affiliated with cueballs.

That being said, he's usually responded to my PM's within a week, so he's still around.