JDL Catted Header

[Apoc]

Originally Posted by nelsmar

I have installed a lot of headers and used STI and BRZ gaskets. You want to warm the engine and torque when warm. The nuts won't come loose. Especially if you are using the copper lock nuts. But the torque value may change due to the engine having slight flex after warming up.

I am going to assume the design for the catted UEL hasn't changed much if any from the original prototype and I forsure saw a fairly large gain across the powerband. Did you have it dyno tuned or just e tuned or what? I would be more than happy to share the vvt maps used in the dyno above when I get to my computer.

@nelsmar I would be happy to try your VVT maps for my JDL UEL header.

[nelsmar]

Originally Posted by Apoc

@nelsmar I would be happy to try your VVT maps for my JDL UEL header.

Mind you this was for the Catted header

[Apoc]

Oh I'm uncatted so I need to read more carefully. Thanks for sharing though.

[nelsmar]

Originally Posted by Apoc

Oh I'm uncatted so I need to read more carefully. Thanks for sharing though.

Uncatted 200+WHP (Mustang dyno with proper SAE correction) mods were:
JDL UEL
JDL OP
JDL Catted FP
Stock catback
TRD intake
HKS duct (I don't recall think i made vvt changes for the duct install, I would have to double check. If I did they were very minor):

[kch]

Originally Posted by nelsmar

Uncatted 200+WHP (Mustang dyno with proper SAE correction) mods were:
JDL UEL
JDL OP
JDL Catted FP
Stock catback
TRD intake
HKS duct (I don't recall think i made vvt changes for the duct install, I would have to double check. If I did they were very minor):

200whp NA without E85 on a mustang dyno? I'm not calling bullshit, but i'm skeptical.

[nelsmar]

Originally Posted by kch

200whp NA without E85 on a mustang dyno? I'm not calling bullshit, but i'm skeptical.

https://www.dropbox.com/s/69lkunsyql...1-4th.pdf?dl=0

4th gear (5th gear is 1:1) Hell i want to say the dyno might have been under calibrated RPM wise which would mean the HP would be slightly higher as I was using wheel speed for RPM pickup. I want to say it peaked at 201WHP for a few pulls and before smoothing the plot but i decided to pull it back just a hair since it was going to be driven fairly hard. The weather station had just been verified for calibration, I unfortunately don't have the weather report spec's around for exact climate & correction factor. Above was one of the early E85 pulls vs the finalized 91 octane. This car has been a track whore and driven on very aggressive tunes for most of its life... Still holding down the same power it did 50k miles ago.

Here is the finalized E85 with a 5th gear roll...


I have done this with multiple cars... and remote tuned a few friends cars (which is obviously not going to be as dialed in as a dyno tuned car) and had them land 190-195+ with similar mods.

If you aren't familiar with me on the forums (I have been away for a while now) go back and look through some of my threads. I post no-bullshit dyno's. I want to say I am somewhere around ~1600 flashes on the ecu on my own personal car... So I have had my fair share of time messing around with this platform lol.

[ort895]

Hate to be that guy (not really). But anymore updates/ dynos? I plan on going with the carted just because I won't be getting a tune right away.

[pepe]

Originally Posted by CraftyObeseCrunchyKitty

I installed the JDL catted UEL with a factory exhaust and I didn't notice a difference in the exhaust note. No rumble at all. Swapping out the muffler for the muffled track pipe from Nameless makes it sound like a typical tuner Subaru though. I dynoed it, un-tuned, and lost a significant amount of mid-range torque. After getting tuned some of the mid range torque was returned and a decent amount was gained at the top of the rev range. It weighs about 6 pounds less than the factory header so I guess I'll stick with it. For now.

you sure of this? "and lost a significant amount of mid-range torque"