doitskippy
New Member
Hey Folks,
I've got a 2005 FZ1 with an EXUP valve problem. I swung by my local shop today after suddenly having very little power at around 5k-5.5k RPMs on the highway, and we did a few diagnostics. The shop manual says to replace the Ignitor unit based on the troubleshooting steps, and we actually swapped the ECU for the other guy's unit quickly (handy when your mechanic rides the same bike), and sure enough with the other ECU in place the servo spun about just fine. Pretty expensive little box! If I've got to replace it then I'll replace it, but I've got a few questions and I'm wondering if you guys can help me come to a decision.
I ride a ton. This is my second problem with that EXUP valve since I got the bike just shy of a year (and 30k miles) ago. First problem was just the typical sticking, and a cable adjustment. Now a bad circuit in the ECU/Ignitor. Can I just gut that dang EXUP valve and have done? We safety wired the thing open and buttoned everything up so I could get myself home while I make a decision and honestly I didn't notice that much of a difference in the quick 10 minute ride from the mechanic's to my garage. I'll gladly eliminate any more headaches by eliminating that dang EXUP valve, as long as it doesn't cause more problems (such as a huge dip in power on the low end or a big hit to fuel economy).
Is there any way to verify that the other circuits in the Ignitor/ECU are working properly? Should I be getting another error code if the whole thing is dead? Any tests I can run to make sure everything else in that little black box is firing like it should?
Basically, if the EXUP isn't doing a lot for me, and the rest of my Ignitor/ECU is working fine, I'm leaning towards gutting that EXUP valve and buttoning up the wiring so I don't get the 7k error code on my tach every few seconds.
On the other hand, if I truly have a faulty Ignitor/ECU, I would want to replace it so the other systems are getting what they want out of life.
I've heard of full system exhausts removing the valve and even gaining performance across rev range, but I'd rather keep the stock because I'm a cheapskate and I don't care to have a loud pipe or to have to install a power commander and so on. Plus, they're hard to get in California.
Thank you all in advance for your help, I really appreciate it.
I've got a 2005 FZ1 with an EXUP valve problem. I swung by my local shop today after suddenly having very little power at around 5k-5.5k RPMs on the highway, and we did a few diagnostics. The shop manual says to replace the Ignitor unit based on the troubleshooting steps, and we actually swapped the ECU for the other guy's unit quickly (handy when your mechanic rides the same bike), and sure enough with the other ECU in place the servo spun about just fine. Pretty expensive little box! If I've got to replace it then I'll replace it, but I've got a few questions and I'm wondering if you guys can help me come to a decision.
I ride a ton. This is my second problem with that EXUP valve since I got the bike just shy of a year (and 30k miles) ago. First problem was just the typical sticking, and a cable adjustment. Now a bad circuit in the ECU/Ignitor. Can I just gut that dang EXUP valve and have done? We safety wired the thing open and buttoned everything up so I could get myself home while I make a decision and honestly I didn't notice that much of a difference in the quick 10 minute ride from the mechanic's to my garage. I'll gladly eliminate any more headaches by eliminating that dang EXUP valve, as long as it doesn't cause more problems (such as a huge dip in power on the low end or a big hit to fuel economy).
Is there any way to verify that the other circuits in the Ignitor/ECU are working properly? Should I be getting another error code if the whole thing is dead? Any tests I can run to make sure everything else in that little black box is firing like it should?
Basically, if the EXUP isn't doing a lot for me, and the rest of my Ignitor/ECU is working fine, I'm leaning towards gutting that EXUP valve and buttoning up the wiring so I don't get the 7k error code on my tach every few seconds.
On the other hand, if I truly have a faulty Ignitor/ECU, I would want to replace it so the other systems are getting what they want out of life.
I've heard of full system exhausts removing the valve and even gaining performance across rev range, but I'd rather keep the stock because I'm a cheapskate and I don't care to have a loud pipe or to have to install a power commander and so on. Plus, they're hard to get in California.
Thank you all in advance for your help, I really appreciate it.