Evo X upgrades - Page 83

**mlomker** · 11-18-2010

Quote:

Originally Posted by scheides

Hey do you have any graphs with boost plots?

I do but I didn't want to post them. It's bad. The tubular, MX1s and ported everything had a negative impact on spool. I only had a 2psi drop at a stock redline but at 9k it was 5. I might have leaks. I dunno.

**Kracka** · 11-18-2010

Nice numbers!

**Halon** · 11-18-2010

Has anyone tried a simple MBC on an X? Wonder if it'd help at all with the loss of psi. Or is the turbo just running out of breath up there?

Either way, still a killer setup with great numbers, congrats again!

**scheides** · 11-18-2010

Don't be ashamed! 25psi @4000rpm is dandy for that turbo! Having ported *everything* like you have will make it hard for the turbo to hold boost up top--don't worry about it, but you definitely start to look close at 7500rpm and say, 'man if I just had an extra 2psi I'd have +20whp (or whatever)....this is why I did the hybrid mbc/bcs thing, we'll see if it pays off.

Again, sweet results from a great setup! With any luck I'll be in that ballpark down the road.

**Murlo26** · 11-18-2010

Great work! Finally! I bet it feels good to finally have a proper tune! Congrats.

Don't worry about the drop in boost, mine tanks the same way...drops from 37-29psi for me, so your drop isn't so bad, lol.

I'd blame the spool on the tubular, but honestly I bet you made an extra 15+whp from it. Worth it if you ask me

Now time to stop spending money, paying off debt and enjoy the car...welcome to my world if you weren't here already

**mlomker** · 11-18-2010

Quote:

Originally Posted by Murlo26

Now time to stop spending money

Not quite yet due to the oil burning. There also seems to be an exhaust leak at the turbo to downpipe connection, so yet another reason to have the turbo pulled. At least I can stop spending money on fueling.

**Murlo26** · 11-18-2010

Quote:

Originally Posted by mlomker

Not quite yet due to the oil burning. There also seems to be an exhaust leak at the turbo to downpipe connection, so yet another reason to have the turbo pulled. At least I can stop spending money on fueling.

For now

**Shane@DBPerformance** · 11-18-2010

Quote:

Originally Posted by Halon

Has anyone tried a simple MBC on an X? Wonder if it'd help at all with the loss of psi. Or is the turbo just running out of breath up there?

Either way, still a killer setup with great numbers, congrats again!

They drop boost much worse with an MBC. With an MBC in there it would probably be a straight taper from 30psi down to 20psi. He could maybe try to use an MBC in there with the BCS to try to have more duty cycle to play with liek Schiedes did, but there might not be much left in that turbo in the upper RPMs anyways.

**Murlo26** · 11-18-2010

I think boost is dropping so much just because the head flows so well and the motor is just gobbling it all up. The X's head flows great in stock form, when you port it with oversized valves I am sure in the upper RPMS it can ingest a shit load.

**mlomker** · 11-18-2010

Quote:

Originally Posted by Murlo26

For now

Quote:

Originally Posted by ecoli

there might not be much left in that turbo in the upper RPMs anyways.

There have been a handful of all-out BBX builds while I was busy sorting the car. One guy is running 35psi and making more torque but I think the hp number is as high as its going to go.

The 044 on a BAP should be able to handle a Black, which is the only upgrade that I'd consider.

**Murlo26** · 11-18-2010

Link to a guy running 35psi on a BBX? Did i really miss that one, or maybe I just forgot.

**mlomker** · 11-18-2010

Quote:

Originally Posted by Murlo26

Did i really miss that one, or maybe I just forgot.

It was in a guy's sig on EvoM and not a dyno or build thread. He did 500/500 on Tobz's dyno. I'll link it if I run across it again.

**goodhart** · 11-18-2010

Was just now able to see the graphs. Nice numbers dude!!

**mlomker** · 11-19-2010

I'm working on re-doing my catch can setup. I'm replacing the vacuum line that I was using with fuel hose since the vacuum line was weeping oil.

I exchanged emails with Chad@CBRD and he concurs with Ron that it's most likely crankcase pressure. With the dipstick blowing and other symptoms, I guess that makes sense. I'll drop Grimmspeed another line about their AOS.

I'm not keen about drilling holes in my valve cover and going to a more elaborate catch can arrangement but if that's what it takes...

**Kracka** · 11-19-2010

Have you tried just removing the catch-can setup all together for a test? My guess is going back to stock routing would cure the problem (PCV to IM, VC to intake). You can leave your check-valves in place, as long as the ones you got can flow a decent amount of air they shouldn't be the restriction.

The only other thing I can think of is your piston rings not sealing well. You just did drop-ins, right? Have you done a compression or leak-down test yet?

**Shane@DBPerformance** · 11-19-2010

He has just straight up drop-ins, so it's very likely the cause.

**Murlo26** · 11-19-2010

Is this something that would've been solved with a hone or why you guys recommend a hone?

Just curious because technically I "just did drop ins" but it was on a fresh motor.

**mlomker** · 11-19-2010

Quote:

Originally Posted by Kracka

Have you tried just removing the catch-can setup all together for a test?

I did on the front side but my Primo intake doesn't have the fitting. I've thought about dropping them a line to add one.

Quote:

Originally Posted by Murlo26

Is this something that would've been solved with a hone or why you guys recommend a hone?

Looks that way. There's no way I could afford to fix it, either, if that's the case.

**mlomker** · 11-19-2010

Quote:

Originally Posted by Kracka

Have you done a compression or leak-down test yet?

Sounds like the next step. I'll wait a week for my fuel hose to come in (ordered it from Jegs) and see if Grimmspeed gets back to me at all. I have an email off to Jesse to see if I can bring the intake in for a fitting.

End of the month I'll probably leave it with Ron for a few hours and have him run the usual tests...leakdown, compression, and pull the plugs and take a peek in the cylinders.

--
Chad@CBRD is an odd guy. One minute he comes across as stern and the next he's joking. I haven't quite figured him out.

Quote:

Originally Posted by mlomker

Then I'll pursue that more aggressively. I've never heard of anyone having to drill additional venting into a X valve cover but it wouldn't be the first time that my car was special in an annoying way.

Quote:

Originally Posted by CBRD

LOL! these damn things are a pain,

make sure the barb on your intake pipe is drilled out big enough,

we had an AMS intake pipe here that they forgot to drill, could have REALLY damaged the motor!

cb

**Halon** · 11-19-2010

You dropped in new pistons/rings without running a hone or anything? I'd definately say there's a chance that could be the root cause there. The rings may have never bedded in well and hense the increased blow-by.

Pop the head off, oil pan off, remove pistons and rods and run a quick hone up and down. Re-ring and see if that helps. Alothough I don't know Evo X's so I have no clue how difficult removing the head and oil pan is compared to a dsm.