New member Hawk DLX 250 EFI

Shawnd84 · 01-22-2020, 12:23 AM

New member here!

Looking for any help with decat on an EFI bike? Anyone take the plunge? I did the air box mod without any issue? I worry about the EFI not dealing with it well and the lack of reflash for the Delphi ECU on the Hawk if i cut out the cat... Any words of wisdom would be great !

Thanks in advance
Shawn

Emerikol · 01-22-2020, 05:01 AM

Welcome to the forum! The fastest way to tell if you'll have a problem is to look at the exhaust and locate the O2 sensor(s). If you only have one O2 sensor, and it's in front of the cat, you won't have any problems gutting it. If there are two O2 sensors, one in front and one downstream, you'll trip the check engine code and run in open loop all the time. I can't imagine these bikes having two O2 sensors, that's usually reserved for the higher-end BMW's and such. Let me know if you have any issues locating the O2 sensors.

**JerryHawk250** · 01-22-2020, 08:37 AM

Welcome aboard! I think you only have the one O2 sensor before the cat. The ECU should adjust to the changes on its own.

Shawnd84 · 01-24-2020, 10:43 AM

There is only the one O2 sensor before the cat ! I'm gunna gut it and i'll let you know what happens!

Thank guys!

MINTY DLX · 05-17-2020, 06:03 AM

updates?

Newrider6896 · 07-25-2020, 02:15 PM

Please help, dropped my bike and thrashed threads on o2 sensor. Where can i get one for hawk 250 dlx efi 2020-2019?

01-22-2020, 12:23 AM	#1
Shawnd84 Join Date: Jan 2020 Location: Va Posts: 25	New member Hawk DLX 250 EFI New member here! Looking for any help with decat on an EFI bike? Anyone take the plunge? I did the air box mod without any issue? I worry about the EFI not dealing with it well and the lack of reflash for the Delphi ECU on the Hawk if i cut out the cat... Any words of wisdom would be great ! Thanks in advance Shawn
	1

01-22-2020, 05:01 AM	#2
Emerikol Join Date: Oct 2016 Location: Carrollton, GA Posts: 1,467	Welcome to the forum! The fastest way to tell if you'll have a problem is to look at the exhaust and locate the O2 sensor(s). If you only have one O2 sensor, and it's in front of the cat, you won't have any problems gutting it. If there are two O2 sensors, one in front and one downstream, you'll trip the check engine code and run in open loop all the time. I can't imagine these bikes having two O2 sensors, that's usually reserved for the higher-end BMW's and such. Let me know if you have any issues locating the O2 sensors. __________________ First Rule of Aviation: -Never Pass Up The Opportunity to Pee I was struggling to get my wife's attention; I sat down on the couch and looked comfortable. That did the trick! My wife says I only have two faults. I don't listen and something else... If at first you don't succeed, try doing it the way I told you to... The Stable: 2005 Yamaha V-Star 650 - SOLD 2015 Suzuki DR 650 2015 RPS Hawk 250 - SOLD 2016 Ural Gear Up
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01-22-2020, 08:37 AM	#3
JerryHawk250 Moderator Join Date: Oct 2016 Location: Houma, La. Posts: 11,724	Welcome aboard! I think you only have the one O2 sensor before the cat. The ECU should adjust to the changes on its own. __________________ 2024 Linhai 300 ATV 4x4 2023 Lifan Lycan 250 Chopper 2023 Venom Evader 2022 Lifan KPX250 2020 Kawasaki Vulcan S (Sold) 2004 Honda ST 1300 2016 Black Hawk 250 (sold) Keihin PE30 carb,125 main,38 slow.Pod filter,ported & decked head 10:1 CR,Direct Ignition Coil,15/40Sprockets,NGK DPR8EIX-9,De-Cat,Dual Oil Cooler,Digital Cluster 2016 Cazador180 XL 2014 Coolster150 JerryHawk250.com My YouTube Channel
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01-24-2020, 10:43 AM	#4
Shawnd84 Join Date: Jan 2020 Location: Va Posts: 25	Dlx efi decat?? There is only the one O2 sensor before the cat ! I'm gunna gut it and i'll let you know what happens! Thank guys!
	4

05-17-2020, 06:03 AM	#5
MINTY DLX Join Date: May 2020 Location: pnw Posts: 16	updates?
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