Hurricane Tunes with External CAI

[snowdust]

Anyone running the hurricane tunes with a CAI that is out of the hood? Looking at going that route but worried it'll run lean. I don't believe he offers any mods to the main tunes so curious if people are able to run this setup without knock.

 

[yamamarc]

Lots of guys running out of cab cai!! Call Dave to confirm

 

[DooZ]

No issues lots of guys running out of cab cai!! Call Dave to confirm

You sure? I thought I remembered Knappattack trying it last year(?), and the tunes he was using went leaner than he felt comfortable with.

 

[snowdust]

You sure? I thought I remembered Knappattack trying it last year(?), and the tunes he was using went leaner than he felt comfortable with.

That's what I am worried about. I need to call Dave but wondering if anyone has real world results.

 

[ROCKERDAN]

Hurricane tunes are plenty rich IMO.

 

[KnappAttack]

You sure? I thought I remembered Knappattack trying it last year(?), and the tunes he was using went leaner than he felt comfortable with.

I put the filter out thru the front where it was ramming air into it and it was leaner than I was comfortable with, but I never had any deto. AF was like 12.6-12.7 or so. It was much cooler air intake temps however.

 

[chaleurphantom]

I put the filter out thru the front where it was ramming air into it and it was leaner than I was comfortable with, but I never had any deto. AF was like 12.6-12.7 or so. It was much cooler air intake temps however.

I am looking at the 270 tune with a Cold Air Intake matched with the Hurricane Trail Muffler. Should I be worried of pre-detonation?

How are you measuring A/F ratio. Can it be accessed through cluster?

I assume the knock protection feature should protect against pre-detonation?

 

[yamamarc]

I am looking at the 270 tune with a Cold Air Intake (under hood) matched with the Hurricane Trail Muffler. Should I be worried of pre-detonation?

How are you measuring A/F ratio. Can it be accessed through cluster?

I assume the knock protection feature should protect against pre-detonation?

I'm running stoke muffler tune bundle
225 /240/270 with cai, turbosmart blow off valve and will be Adding 3 bar map sensor .
I was in contact with Dave he said it is fine non issue

 

[KnappAttack]

I am looking at the 270 tune with a Cold Air Intake matched with the Hurricane Trail Muffler. Should I be worried of pre-detonation?

How are you measuring A/F ratio. Can it be accessed through cluster?

I assume the knock protection feature should protect against pre-detonation?

All the Hurricane tunes are safe with a cai, or even an out the hood standard cai.

What I changed to an tried on my own last year was my own outside the hood RAM air and it ran leaner with that from the ramming effect. Even though it was leaner I still had no deto detected.

When I put the cai back underhood, AF ratio went back to normal.

I have AF module and data logging and share logs with Hurricane. When we saw the Ram air system lean out that much we decided it best to take it off and install back under the hood. The ram air was of my own design.

If it have knocked being that lean, the det protection would have saved the engine and we’d have seen it on the logs.

 

[74Nitro]

All the Hurricane tunes are safe with a cai, or even an out the hood standard cai.

What I changed to an tried on my own last year was my own outside the hood RAM air and it ran leaner with that from the ramming effect. Even though it was leaner I still had no deto detected.

When I put the cai back underhood, AF ratio went back to normal.

I have AF module and data logging and share logs with Hurricane. When we saw the Ram air system lean out that much we decided it best to take it off and install back under the hood. The ram air was of my own design.

If it have knocked being that lean, the det protection would have saved the engine and we’d have seen it on the logs.

Mike, seems to me the computer should have adjusted accordingly detecting colder air coming in and added slightly more fuel. No?

 

[chaleurphantom]

All the Hurricane tunes are safe with a cai, or even an out the hood standard cai.

What I changed to an tried on my own last year was my own outside the hood RAM air and it ran leaner with that from the ramming effect. Even though it was leaner I still had no deto detected.

When I put the cai back underhood, AF ratio went back to normal.

I have AF module and data logging and share logs with Hurricane. When we saw the Ram air system lean out that much we decided it best to take it off and install back under the hood. The ram air was of my own design.

If it have knocked being that lean, the det protection would have saved the engine and we’d have seen it on the logs.

Thanks for the Feedback. The CAI that is going on mine also has an inlet on the tip of the cone. I believe it will have somewhat of a ram air effect.

I thought maybe there was a way to monitor the A/F through the dash, maintenance mode?

To install an A/F gauge you need to have a bung on the exhaust? Are there any videos, thats you know of, to install one of these?

 

[KnappAttack]

Mike, seems to me the computer should have adjusted accordingly detecting colder air coming in and added slightly more fuel. No?

The ECU compensates for colder air yes, but it does not compensate for such a drastic change of ramming it in the turbo intake and making the turbo more efficient with more mass airflow than the tune was designed for.

If Yamaha had a closed loop EFI system on it, the ECU could compensate for the air fuel going lean, but it doesn’t and can’t.

It’s designed for a certain set of parameters and conditions , and anything out of the parameter of which it was designed will change that air fuel ratio. Quite obviously the tunes are not designed for the ramming effect as that leans it out some.

An out of hood cold air intake is fine, just don’t try to ram it in the intake, if you do, you better know what the air fuel ratio is doing because more than likely it will lean out from my testing results.

 

[ROCKERDAN]

Mike is right....the guys at the speed runs, all running the RAM AIR out front, make big big power(speeds). Definitely are running a different tune for that setup. That RAM AIR is alot more air then just a normal OUTSIDE CAI, but the logs dont lie as Mike mentioned.

Having the data-logging and AFR is smart if you are running bolt ons that are not in the range the tunes were designed for.

Dave would be able to tell you this, or maybe he will chime in here.

Dan

 

[snowdust]

Haven't had a chance to call him yet. I'm hoping he'll make a tune suite for the ram air style of CAI. Tommcat Performance is designing one I am interested in but will need the tune modified based on Knapp's feedback.