I'm getting knock with meth...

[TopherSho]

I know you may hate to try this...But you are the only one I think that has the throttle plate adapter...Although it's very nice and clean looking it's making me wonder. ANd like SBS was saying maybe it's not allowing the meth to mix as well. I guess if you had the nozzles installed earlier in the intake tubing the meth and aircharge would mix more and be delivered more homogenously

Another thing I was thinking. I can change the knock sensor logic in the tune and you can add the DMR items in livelink for individual knock sensors 1 through 6 if they are available for your strategy and I think they should be...Then we can see if there is a certain cylinder or more that are recording the Knock retard.

If there is an odd cylinder do that then that may tell us that the meth is not mixed up well and it's a delivery issue possibly from using the throttle plate....So you could do that or relocate the nozzles to charge piping pre throttle body

^ The individual knock sensor DMR would be ideal .. +1 this a bunch!  /wave at AJP/

 

[ddlopes]

I've always run the meth with a spacer plate. The power nozzle ramps up just like the primary nozzle. Starts at 7psi and maxes out at 8psi. So its maxed out extremely fast. Yes the nozzles spray good for at least 45 seconds without any pause. I tested that already.

 

[ddlopes]

I just got off the phone with PROMETH which is the company that makes the direct port meth system for the SHO. They informed me that spraying meth while using a throttle body spacer is a bad idea. They actually tested using clear piping and verified that the meth was all being sprayed to the back wall of the intake. So I guess I'll be taking the hot pipes off again to have them setup for meth. Can someone send me a pic of their setup so I can find the proper location for the nozzles.... Thanks for all your help guys. I'll give an update once I get the hot pipes back and do some datalogs.

 

[TopherSho]

I want a clear intake manifold and throttle body!

 

[ddlopes]

My order of boostane just came in. I'd like to mix some in the tank to see if the extra octane cures the knock since the location of my meth nozzles isn't ideal and it's not providing all the cylinders an even amount of meth. Here's a link to a video of the product... Let me know your thoughts good or bad.

https://www.youtube.com/watch?v=MFUAWdoGrI0

 

[StealBlueSHO]

On a side note... Brad used an SAT word today! The new word of the day is homogeneous!

For real, glad you have a clear cut place to start trouble shooting! I have my nozzle between the noise maker and the rubber connecting coupler on the stock intake pipe.




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[TopherSho]

My order of boostane just came in. I'd like to mix some in the tank to see if the extra octane cures the knock since the location of my meth nozzles isn't ideal and it's not providing all the cylinders an even amount of meth. Here's a link to a video of the product... Let me know your thoughts good or bad.

https://www.youtube.com/watch?v=MFUAWdoGrI0

Be it my humble opinion I think it will raise the knock threshold a little,  but you will still be suffering MUCH lower spark timing that you should be getting @350ml spray.

I'd save it for race day,  plug the two holes in the throttle spacer and keep it in place and drop in a temp pipe or pipe extender and bung it there and re-test. 

For reference here is the on-the-cheap solution I came up with to avoid spending 200$ on a single hot-pipe or 400$ on a full set..

 

[ddlopes]

Ok thanks!! What I'll do is stagger them so they're not spraying into each other. Hopefully this resolves my issue with knock. What's your thoughts on the Boostane?

 

[ddlopes]

I'm running hot pipes so I'll just install two bungs on my pipes

My order of boostane just came in. I'd like to mix some in the tank to see if the extra octane cures the knock since the location of my meth nozzles isn't ideal and it's not providing all the cylinders an even amount of meth. Here's a link to a video of the product... Let me know your thoughts good or bad.

https://www.youtube.com/watch?v=MFUAWdoGrI0

Be it my humble opinion I think it will raise the knock threshold a little,  but you will still be suffering MUCH lower spark timing that you should be getting @350ml spray.

I'd save it for race day,  plug the two holes in the throttle spacer and keep it in place and drop in a temp pipe or pipe extender and bung it there and re-test. 

For reference here is the on-the-cheap solution I came up with to avoid spending 200$ on a single hot-pipe or 400$ on a full set..

 

[TopherSho]

I'm running hot pipes so I'll just install two bungs on my pipes

My order of boostane just came in. I'd like to mix some in the tank to see if the extra octane cures the knock since the location of my meth nozzles isn't ideal and it's not providing all the cylinders an even amount of meth. Here's a link to a video of the product... Let me know your thoughts good or bad.

https://www.youtube.com/watch?v=MFUAWdoGrI0

Be it my humble opinion I think it will raise the knock threshold a little,  but you will still be suffering MUCH lower spark timing that you should be getting @350ml spray.

I'd save it for race day,  plug the two holes in the throttle spacer and keep it in place and drop in a temp pipe or pipe extender and bung it there and re-test. 

For reference here is the on-the-cheap solution I came up with to avoid spending 200$ on a single hot-pipe or 400$ on a full set..

Game on then brother!  Post new logs!

 

[ZSHO]

@-trophersho looking good!! I would add some T-Bolts clamps for added security.  Z
$3.00 ea plus free shipping

http://www.ebay.com/itm/Mishimoto-Stainless-Steel-T-Bolt-Coupler-Clamp-3-MMCLAMP-3-/272678959478?epid=662447943&hash=item3f7ceeb976:g:5pcAAOSwONBZCqfC&vxp=mtr

 

[ddlopes]

Here's my datalog with Boostane added to the tank. I drove around for around 20 miles for it to mix. Then completed a multi gear datalog. Looks a little better to me. There's still knock but its down from 8 to 4. I think if I added more boostane (I only put in a 1/3 of the can) it would of lowered the knock even more.

 

[StealBlueSHO]

.... I would just back it off... even 4 with meth is not good....... you really need to log the 2nd bank... IMO your playing with fire...


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[ddlopes]

I just wanted to see if boostane would lower the knock. Which it did so it kinda makes me feel that it most likely is a atomization issue with the meth being injected to close to the intake. And not a faulty knock sensor wire. As I originally thought may be the issue. I'll have the hot pipes back on wednesday all setup with (2) bungs for the meth nozzles.

 

[Macgyver]

I get that this probably an atomization issue. You have said you have been getting more KR every tune revision. Have you tried Tune 4 since tune 7 seems to be the worst?

 

[SHOdded]

My order of boostane just came in. I'd like to mix some in the tank to see if the extra octane cures the knock since the location of my meth nozzles isn't ideal and it's not providing all the cylinders an even amount of meth. Here's a link to a video of the product... Let me know your thoughts good or bad.
https://www.youtube.com/watch?v=MFUAWdoGrI0

No available MSDS for Boostane.  Seems it is MMT based though, as it leaves an orange tint on the plugs.  Claims are that it holds MMT in suspension better than Torco.  And yes, tuning is required to safely run it as it may lean out the AFR.  People are talking about results, nobody's found any chemical composition data.

 

[8nutz8]

I just wanted to see if boostane would lower the knock. Which it did so it kinda makes me feel that it most likely is a atomization issue with the meth being injected to close to the intake. And not a faulty knock sensor wire. As I originally thought may be the issue. I'll have the hot pipes back on wednesday all setup with (2) bungs for the meth nozzles.

Why have you not unplugged the meth and switched to a non meth tune yet?
That would flat out tell you if it's a meth issue or not. Instead you're throwing more variables into the mix and still risking a lot every time you go WOT and experience knock. I would rule out all other variables before spending cash to modify your hot pipe.
just sayin . . . . first things first.

 

[SHOdded]

Would be nice to know if meth is CAUSING the problem, or is AGGRAVATING the problem.  Sometimes the SHO is on the ragged edge, and a tune or tune + significant mods will cause it to hiccup relentlessly.

 

[renospace]

Any updates?? 

I just wanted to see if boostane would lower the knock. Which it did so it kinda makes me feel that it most likely is a atomization issue with the meth being injected to close to the intake. And not a faulty knock sensor wire. As I originally thought may be the issue. I'll have the hot pipes back on wednesday all setup with (2) bungs for the meth nozzles.

 

[JDW1]

If it hasn't been mentioned yet consider your plugs.  I was all of a sudden getting KR with meth and after trying a lot of other things it dawned on me that the plugs had been in for a while, swapped them out and no KR.