Running lean with Cobra Fi2000. What gives?

14195 Views 58 Replies 24 Participants Last post by rarebit, May 26, 2013

Mentat Ix

Discussion Starter · Oct 2, 2011

Well, guys, I put my shiny new exhaust on earlier this week and now there's trouble. A little background:

I drilled my stock exhaust a bit at first, no issues there. Then I got the Fi2000 CVT, installed that. No issues there. The old butt-dyno even told me it did some good with the low-rpm lugging through town.

Next I got the Baron's BAK put on there. That was a bit disappointing. The holes in the cover plate weren't tapped properly - I had to tap them out myself. For what that thing costs, you'd figure... well, anyway, I thought it made throttle response a bit snappier through the whole range.

Now, for the bit where it turns bad. I finally got my V&H Twin Slash Staggered pipes. In black. I put them on without any issues. They look fantastic. They sound great. But the bike's performance has gone a bit strange. It misses at odd times. Weird flat spots. If I'm accelerating hard through the gears, it's got some serious oomph and no issues. If I'm just cruising at 60 in 5th, it misfires at random.

It got really bad this morning when I was putting around in 2nd gear, 30-40mph. It was stuttering so bad I thought it was going to keel over. Quite a jerky ride. So I got home this morning and checked the spark plugs, and they're very, very white.

Obviously, I've got a problem. The question is, what else should I check before I start making angry calls to Cobra?

41 - 59 of 59 Posts

clar2001

· #41 · Oct 20, 2011

midlifecrisis said:
Not directly. I'm talking with Mike who said he, Phil, and some of the other engineers are working to solve this issue. They acknowledged I was not the only one having this issue.

I talked to phil about this problem that myself and others on here are having a couple days ago still waiting to here back < I dont think they have a sloution yeat.
I to might try hooking the 02sensor back into the ECU and see what happens.

UrbanRage

· #42 · Oct 20, 2011

clar2001 said:
midlifecrisis said:

Not directly. I'm talking with Mike who said he, Phil, and some of the other engineers are working to solve this issue. They acknowledged I was not the only one having this issue.

Click to expand...

I talked to phil about this problem that myself and others on here are having a couple days ago still waiting to here back < I dont think they have a sloution yeat.
I to might try hooking the 02sensor back into the ECU and see what happens.

Post up your results... I am curious to see if that will help.

middleagecrisis

· #43 · Oct 21, 2011

It didn't correct the problem. After it failed to correct the issue I went ahead and change out my stock air filter to the LA Choppers XXX. Now it does it in first gear too at about 25 mph.

On a positive note, the new big air system looks awesome.

stryk-ed

· #44 · Oct 21, 2011

I have the Cobra Swept Exhaust with the Fi2000R O2 and was having the same backfire/popping on deceleration between 37-43 MPH on second, third and sometimes 4th gears. I also tried hooking the O2sensor into the ECU but that did not help.

Does anyone else have the Cobra Exhaust and Fi2000R O2 (not the PowerPro auto tuner) combo? The Cobra settings of 2-5-5 don't seem to work and I have them now at 6-5-5 and it runs better but still have some backfire.

middleagecrisis

· #45 · Oct 21, 2011

Now Cobra wants me to check and make sure the gaskets are sealed on the throttlebody.

SmokenJoe

· #46 · Oct 21, 2011

Must be nice to be Cobra's test pilots. 8)

Mentat Ix

Discussion Starter · #47 · Oct 24, 2011

SmokenJOE said:
Must be nice to be Cobra's test pilots. 8)

I'm less than enthused. I bought this thing so I wouldn't have to mess with it. Now I've been messing with it for weeks, my brand new pipes are blued all to crap, and it doesn't seem we're any closer to a solution.

edit: oh, and I'm worried about getting caught in traffic or riding on hot days because if it overheats I'm pretty sure my warranty is useless.

middleagecrisis

· #48 · Oct 24, 2011

Cobras sending me a new unit. I doubt it will make a difference as it didn't for others. If it doesn't work I'll probably ask for my money back and try the power commander V w/ auto tuner.

strykenshane

· #49 · Oct 25, 2011

midlifecrisis said:
Cobras sending me a new unit. I doubt it will make a difference as it didn't for others. If it doesn't work I'll probably ask for my money back and try the power commander V w/ auto tuner.

You will absolutely not be disappointed with the auto-tune, works great, little pricey but worth it in my book, put 450 on since the upgrade and gas mileage is about 45 mpg's but still seems to have more power

stryk-ed

· #50 · Oct 25, 2011

Re: Re: Running lean with Cobra Fi2000. What gives?

Mentat said:
SmokenJOE said:

Must be nice to be Cobra's test pilots. 8)

Click to expand...

I'm less than enthused. I bought this thing so I wouldn't have to mess with it. Now I've been messing with it for weeks, my brand new pipes are blued all to crap, and it doesn't seem we're any closer to a solution.

edit: oh, and I'm worried about getting caught in traffic or riding on hot days because if it overheats I'm pretty sure my warranty is useless.

Yeah I've been tweeking mine since it was installed and it still does not run right. Still have backfire on every gear on deceleration and I'm on 8-2-2 now. My question is, I bought my Fi2000R from PhatPerformance.com, would I send the part back to Cobra or PhatPerformance?

TLKjoe

· #51 · May 24, 2013

I've got a bone-stock 2011 stryker. Put the V&H staggers on it yesterday. So long as she's getting fuel, she runs fine.

When motoring down, pops and backfires bad, and cuts out at lower rpms.

In other words, the exact problems you guys are describing, but I'm running stock intake and computer.

Is there no way to just tell the computer to make the mix more fat? I'm beginning to lament the loss of carbs.

Adrenaline Revolution

· #52 · May 24, 2013

It's really looking like the V&H has something to do with this.
I also have a bone stock, brand new '11 with cobra swept pipes and the only down side is the stuttering/hesitation cruising around town in 2nd gear which I hear the Cobra Auto Tune clears up.

I haven't noticed any bad pop on a hard decel but I haven't put many miles on it yet although I downshifted while going down a steep hill and had zero popping.

I'll be adding a Cobra air intake soon and a Cobra auto tune as soon as the dealership gets it, (On order)
I'll let you know what the outcome is.

I also noticed most, a VERY large percentage of people posting about this did so in 2011 with very little complaint since then.
That alone tells me that maybe they got it right now???
I hope so, mine should be here any day!:nod:

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DraEagWol

· #53 · May 24, 2013

if you havn't seen this thread.... http://www.yamahastarstryker.com/21...i2000-power-pro-auto-tuner-issues-thread.html

its a good read concering the cobra powrpro with powrflo & Pipes...

Adrenaline Revolution

· #54 · May 24, 2013

DraEagWol said:
if you havn't seen this thread.... http://www.yamahastarstryker.com/21...i2000-power-pro-auto-tuner-issues-thread.html

its a good read concering the cobra powrpro with powrflo & Pipes...

Thanks, I studied that thread while deciding which unit to buy!!!
Did you get your new unit yet? Did it solve the problem?

I haven't got the Powerflow yet, next on the list, then a 30 tooth fwd pulley then...

Anyway, It certainly appears that they are getting the thing dialed in.
It's unfortunate that the customer has to be the test dummies though.

I may be PM'ing you in the future for Phils ##:nod:

Thanks
"AR"

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DraEagWol

· #55 · May 24, 2013

Adrenaline Revolution said:
Thanks, I studied that thread while deciding which unit to buy!!!
Did you get your new unit yet? Did it solve the problem?

I haven't got the Powerflow yet, next on the list, then a 30 tooth fwd pulley then...

Anyway, It certainly appears that they are getting the thing dialed in.
It's unfortunate that the customer has to be the test dummies though.

I may be PM'ing you in the future for Phils ##:nod:

Thanks
"AR"

AR- np.. I'll give ya phil's # if ya want it. And no, I havn't received my "new" unit back... Phil said it was "accidentally" sent regular mail, not priority post... so.. I'm still waiting... maybe i'll get it today... may be Tuesday.. *sigh*..

I'll update when I do get it installed and the results!

DraEagWol

· #56 · May 26, 2013

Well I received my "new" unit and installed it... read about it in the other thread... didn't want to post it twice.

Stryker2012

· #57 · May 26, 2013 (Edited)

Just for statistics sake.

Just installed the PowrPro autotuner and the Powrflo intake, have stock exhaust but seriously drilled out. I have no issues at all, bike runs better.

11Stryker

· #58 · May 26, 2013

Stryker2012 said:
Just for statistics sake.

Just installed the PowrPro and the Powrflo intake, have stock exhaust but seriously drilled out. I have no issues at all, bike runs better.

That's the way, We like it, Uh Huh, Uh Huh

rarebit

· #59 · May 26, 2013

Yup.

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