JDL 4-2-1 EL header - Page 29 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

jflogerzi · 08-17-2021, 11:28 AM

The garage that did mine mounted it a bit with an offset to give it more clearance

Sent from my GM1915 using Tapatalk

bmacfrs · 08-17-2021, 11:40 AM

I would contact them. I had a fitment issue with the flanges not aligning to the head studs properly. They sent a replacement.

Sent from my SM-G960U using Tapatalk

Goingnowherefast · 08-17-2021, 11:47 AM

No issues here with my JDL 4-2-1 EL and the ISR overpipe. Stock engine mounts.

Mike_ZN6 · 08-17-2021, 01:49 PM

I sent them a message using the contact form on their site. We will see what they say.

Mike_ZN6 · 08-17-2021, 05:51 PM

JDL got back to me right away! They will be sending out a new overpipe. Hopefully this one resolves the issue.

steverife · 08-17-2021, 06:12 PM

I had very limited dealings with them when I purchased my header and FP/OP, but those dealings were very pleasant.

x808drifter · 08-19-2021, 01:41 PM

Just hammer the pipe.
You won't lose any measurable power.

JBezugs · 08-19-2021, 03:08 PM

Here's my VirtualDyno run on a flat road in my BRZ.
My setup is a JDL 4-2-1, stock FP and OP, OnPoint Dyno dyno tune on 94 Octane. Car weighs in at 2945lbs with me in it and a basically full tank (verified from a corner balance in its current state). This run had about a 3/4 tank of fuel so I adjusted my weight based on fuel density vs fuel load accordingly.

Goingnowherefast · 08-19-2021, 03:27 PM

Here's a vdyno (weights fixed, TY JBezugs).

Blue = Tomei UEL w/ ~4 tune revisions ~E77
Red = JDL 4-2-1 w/ 1 tune revisions ~E71

Quote:

Originally Posted by JBezugs

VirtualDyno is accurate but you need to have your parameters set correctly.

Man you sniped me RIGHT before I saw the issue while reviewing my post lolol. Weights fixed. Mine are also from a recent corner balancing sessions so they are accurate and adjusted for fuel. Could you delete the quoted vdyno so people don't get confused?

JBezugs · 08-19-2021, 03:33 PM

Quote:

Originally Posted by Goingnowherefast

Man you sniped me RIGHT before I saw the issue while reviewing my post lolol. Weights fixed. Mine are also from a recent corner balancing sessions so they are accurate and adjusted for fuel. Could you delete the quoted vdyno so people don't get confused?

I work quick I guess!

Edited my post accordingly, those results look much better now!

949 Racing · 08-19-2021, 07:42 PM

Dynos of Blub. E85, Delicious tune, Perrin intake, custom 2.5" exhaust and 2.5" metal core cat on both headers.
OEM is 91 pump gas and 100% unmodified.
Ace350 had a torque bump between 3000-3500.
JDL had a bunch more power past 7100.
Both eliminated torque canyon of OEM.

We sold the Ace and run the JDL now. Testing Crawford BPB but so far no power area gain. We'll play with the tune a bit. If no power gains we'll remove the BPB.

Goingnowherefast · 08-20-2021, 08:43 AM

Great data 949. Kind of confirmed my suspicions. In 2021, considering the price hike and broken weld issues, there's not much reason to get the ACE350 over the JDL 4-2-1 IMO. Unless you're really looking for low end torque.

jflogerzi · 08-21-2021, 12:20 AM

Quote:

Originally Posted by Goingnowherefast

Here's a vdyno (weights fixed, TY JBezugs).

Blue = Tomei UEL w/ ~4 tune revisions ~E77
Red = JDL 4-2-1 w/ 1 tune revisions ~E71

Man you sniped me RIGHT before I saw the issue while reviewing my post lolol. Weights fixed. Mine are also from a recent corner balancing sessions so they are accurate and adjusted for fuel. Could you delete the quoted vdyno so people don't get confused?

JDL really needs to be dialed in to extract all it's power.

Sent from my GM1915 using Tapatalk

Mike_ZN6 · 08-21-2021, 12:36 AM

Quote:

Originally Posted by 949 Racing

Dynos of Blub. E85, Delicious tune, Perrin intake, custom 2.5" exhaust and 2.5" metal core cat on both headers.
OEM is 91 pump gas and 100% unmodified.
Ace350 had a torque bump between 3000-3500.
JDL had a bunch more power past 7100.
Both eliminated torque canyon of OEM.

We sold the Ace and run the JDL now. Testing Crawford BPB but so far no power area gain. We'll play with the tune a bit. If no power gains we'll remove the BPB.

This is exactly what many people on this forum have been waiting for!

08-17-2021, 11:40 AM	#394
bmacfrs Senior Member Join Date: Dec 2016 Drives: 2013 FRS Location: Central PA Posts: 321 Thanks: 157 Thanked 79 Times in 51 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	I would contact them. I had a fitment issue with the flanges not aligning to the head studs properly. They sent a replacement. Sent from my SM-G960U using Tapatalk __________________ WIFE: "How can there be anything left to buy?"

08-17-2021, 11:47 AM	#395
Goingnowherefast Senior Member Join Date: May 2019 Drives: AP2 S2000, 91 Miata 1.8L Rotrex 5MT Location: Detroit, MI Posts: 465 Thanks: 275 Thanked 300 Times in 187 Posts Mentioned: 5 Post(s) Tagged: 0 Thread(s)	No issues here with my JDL 4-2-1 EL and the ISR overpipe. Stock engine mounts. __________________ 2022 Hyundai Elantra N 6MT SCCA TT S3//Will be back in an 86 eventually

08-19-2021, 03:08 PM	#400
JBezugs Good Job Subaru! Join Date: Mar 2016 Drives: '24 CX-50 Meridian Location: Toronto, Ontario, Canada Posts: 355 Thanks: 146 Thanked 336 Times in 157 Posts Mentioned: 4 Post(s) Tagged: 0 Thread(s)	JDL 4-2-1 EL header Here's my VirtualDyno run on a flat road in my BRZ. My setup is a JDL 4-2-1, stock FP and OP, OnPoint Dyno dyno tune on 94 Octane. Car weighs in at 2945lbs with me in it and a basically full tank (verified from a corner balance in its current state). This run had about a 3/4 tank of fuel so I adjusted my weight based on fuel density vs fuel load accordingly. __________________ My (no longer Green) 2017 BRZ Build Thread Last edited by JBezugs; 08-19-2021 at 03:32 PM.

08-19-2021, 07:42 PM	#403
949 Racing FT86Club Official Vendor Join Date: Jan 2012 Drives: Miata, GT350, FR-S Location: California, USA Posts: 422 Thanks: 28 Thanked 919 Times in 300 Posts Mentioned: 10 Post(s) Tagged: 1 Thread(s)	Dynos of Blub. E85, Delicious tune, Perrin intake, custom 2.5" exhaust and 2.5" metal core cat on both headers. OEM is 91 pump gas and 100% unmodified. Ace350 had a torque bump between 3000-3500. JDL had a bunch more power past 7100. Both eliminated torque canyon of OEM. We sold the Ace and run the JDL now. Testing Crawford BPB but so far no power area gain. We'll play with the tune a bit. If no power gains we'll remove the BPB. Attached Images

08-20-2021, 08:43 AM	#404
Goingnowherefast Senior Member Join Date: May 2019 Drives: AP2 S2000, 91 Miata 1.8L Rotrex 5MT Location: Detroit, MI Posts: 465 Thanks: 275 Thanked 300 Times in 187 Posts Mentioned: 5 Post(s) Tagged: 0 Thread(s)	Great data 949. Kind of confirmed my suspicions. In 2021, considering the price hike and broken weld issues, there's not much reason to get the ACE350 over the JDL 4-2-1 IMO. Unless you're really looking for low end torque. __________________ 2022 Hyundai Elantra N 6MT SCCA TT S3//Will be back in an 86 eventually

08-17-2021, 01:49 PM	#396
Mike_ZN6 Senior Member Join Date: Apr 2020 Drives: 2016 Toyota 86 Location: Orlando Posts: 458 Thanks: 254 Thanked 211 Times in 141 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	I sent them a message using the contact form on their site. We will see what they say.

08-17-2021, 05:51 PM	#397
Mike_ZN6 Senior Member Join Date: Apr 2020 Drives: 2016 Toyota 86 Location: Orlando Posts: 458 Thanks: 254 Thanked 211 Times in 141 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	JDL got back to me right away! They will be sending out a new overpipe. Hopefully this one resolves the issue.

08-17-2021, 06:12 PM	#398
steverife Senior Member Join Date: Feb 2018 Drives: 2016 Scion FRS Location: Knoxville, TN Posts: 478 Thanks: 62 Thanked 291 Times in 192 Posts Mentioned: 3 Post(s) Tagged: 0 Thread(s)	I had very limited dealings with them when I purchased my header and FP/OP, but those dealings were very pleasant.

08-19-2021, 01:41 PM	#399
x808drifter LMGTFY Join Date: Mar 2016 Drives: 13 FRS, 91 Miata Location: Lava Town, HI Posts: 2,776 Thanks: 5,561 Thanked 3,650 Times in 1,625 Posts Mentioned: 15 Post(s) Tagged: 0 Thread(s)	Just hammer the pipe. You won't lose any measurable power.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
JDL UEL header/Nameless header-back exhaust (Atlanta area)	carbon_raven	Engine, Exhaust, Bolt-Ons	16	05-09-2015 03:26 AM
Who has Open Flash Header (or aftermarket UEL header) in the GTA with stock exhaust?	alanhung85	CANADA	6	10-21-2014 11:41 PM
RevWorks UEL Header + Nameless Catted Front Pipe VS Stock Gutted Header + FP	NickFRS	Engine, Exhaust, Transmission	44	04-19-2014 06:42 PM
Top Gear Solutions\| HKS Header \|Borla EL & UEL Headers\| Agency Power Header\| + MORE!	TopGearSolutions	Engine, Exhaust, Bolt-Ons	82	04-14-2014 09:16 PM
Gutted cat stock header vs aftermarket catless header NA application	stevo585	Engine, Exhaust, Transmission	8	04-04-2014 05:12 PM

User Name		Remember Me?
Password