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

spcmafia · 08-09-2021, 08:27 AM

Quote:

Originally Posted by J95

So guys I have already my headers ready to mount, and I decided to order an OFT. But it will take time to be delivered to Europe...

So I´m wondering if mounting my headers before receiving the OFT would be any perjudicial to the engine... I have a holidays trip in between (a bit less than 1k miles), and I´m looking forward to mount it already

What do you think?

It is not advisable to install headers without a tune. May be okay, may be not. I wouldn't take that risk.

steverife · 08-10-2021, 09:19 AM

Quote:

Originally Posted by Mike_ZN6

I ordered STi motor and transmission mounts from RHDJapan on July 12th and they showed up today. So that makes it 9 days total shipped via DHL from Japan. RHDJapan had the best price, too.

Ordered the motor mounts about 8 days ago and hadn't heard anything, so I started to get nervous.

But I woke up to a tracking number today. Supposed to arrive Friday, so that'd put me at the 11'ish day mark.

Thanks for the link.

Mike_ZN6 · 08-17-2021, 09:45 AM

I got the STi motor and transmission mounts installed last week. The JDL overpipe is still making contact with the front subframe on the passenger side. The banging is not as loud, but it is definitely still happening.

Here is the point where it is making contact:

I am not sure what to try next. It seems no one else with this header and overpipe has encountered this issue. Maybe I could try stiffer exhaust hangers? I am not sure if this would help though, there is very little clearance between the overpipe and the subframe.

Would you guys contact JDL? I am concerned I may have either a header or overpipe with defective fitment.

jflogerzi · 08-17-2021, 10:28 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, 10:40 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, 10:47 AM

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

Mike_ZN6 · 08-17-2021, 12:49 PM

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

Mike_ZN6 · 08-17-2021, 04:51 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, 05:12 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, 12:41 PM

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

JBezugs · 08-19-2021, 02:08 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, 02:27 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, 02:33 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, 06:42 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.

08-17-2021, 10:40 AM	#397
bmacfrs Senior Member Join Date: Dec 2016 Drives: 2013 FRS Location: Central PA Posts: 302 Thanks: 146 Thanked 66 Times in 43 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, 10:47 AM	#398
Goingnowherefast Senior Member Join Date: May 2019 Drives: AP2 S2000, 91 Miata 1.8L Rotrex 5MT Location: Detroit, MI Posts: 465 Thanks: 275 Thanked 299 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, 02:08 PM	#403
JBezugs Good Job Subaru! Join Date: Mar 2016 Drives: Green '17 BRZ Sport-Tech MT Location: Toronto, Ontario, Canada Posts: 348 Thanks: 141 Thanked 327 Times in 154 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 Green 2017 BRZ Build Thread Last edited by JBezugs; 08-19-2021 at 02:32 PM.

08-19-2021, 06:42 PM	#406
949 Racing FT86Club Official Vendor Join Date: Jan 2012 Drives: Miata, GT350, FR-S Location: California, USA Posts: 413 Thanks: 23 Thanked 907 Times in 292 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

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08-17-2021, 09:45 AM	#395
Mike_ZN6 Senior Member Join Date: Apr 2020 Drives: 2016 Toyota 86 Location: DMV Posts: 426 Thanks: 253 Thanked 209 Times in 139 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	I got the STi motor and transmission mounts installed last week. The JDL overpipe is still making contact with the front subframe on the passenger side. The banging is not as loud, but it is definitely still happening. Here is the point where it is making contact: I am not sure what to try next. It seems no one else with this header and overpipe has encountered this issue. Maybe I could try stiffer exhaust hangers? I am not sure if this would help though, there is very little clearance between the overpipe and the subframe. Would you guys contact JDL? I am concerned I may have either a header or overpipe with defective fitment.

08-17-2021, 12:49 PM	#399
Mike_ZN6 Senior Member Join Date: Apr 2020 Drives: 2016 Toyota 86 Location: DMV Posts: 426 Thanks: 253 Thanked 209 Times in 139 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, 04:51 PM	#400
Mike_ZN6 Senior Member Join Date: Apr 2020 Drives: 2016 Toyota 86 Location: DMV Posts: 426 Thanks: 253 Thanked 209 Times in 139 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, 05:12 PM	#401
steverife Senior Member Join Date: Feb 2018 Drives: 2016 Scion FRS Location: Knoxville, TN Posts: 457 Thanks: 52 Thanked 275 Times in 181 Posts Mentioned: 2 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, 12:41 PM	#402
x808drifter LMGTFY Join Date: Mar 2016 Drives: 13 FRS, 91 Miata Location: Lava Town, HI Posts: 2,776 Thanks: 5,561 Thanked 3,646 Times in 1,625 Posts Mentioned: 15 Post(s) Tagged: 0 Thread(s)	Just hammer the pipe. You won't lose any measurable power.

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