Air box mod

[stingray719]

OK back to the air box mod. Not trying to be the eternal skeptic, but I have a need to understand what is happening.

"Would not pull RPM but felt faster"

Something made the sled faster but with less RPM as I understand

It proved to be faster yes, but why? More HP should have pulled more RPM correct?

Were there gains made somewhere else in the curve? IE not at peak rpm but at the launch.

Less power connecting through the clutches better?

There was talk of a 30mph headwind on previous runs. What were the conditions this time?

Could the air box mod be pushing to a borderline lean condition?

If you are knowledgeable about porting and torque flows you will recognize what I did as far as to keep velocity up in the airbox, think Edelbrock Torquer Manifold for the Small Block. Long straight runners for torque. Added to that were 3 matched holes up top to act as added air to the flow. When I ran that same box my "seat of the pants dyno" said it felt much more torquey as I had hoped. Seeing Terry had similar results made me happy that it worked and not just my observation.

But yeah, do not try this unless you have an AFR meter or checks plugs carefully as you may run lean and detonate.

 

[TD Max]

This guy has followed me over on snowest namecalling and causing as much grief as he can. He doesn't own a Viper by the way, just one of the bashers over there FYI.

Just let it go and trust the TY staff to handle things.

 

[stingray719]

Just let it go and trust the TY staff to handle things.

Agreed, was just an FYI.

 

[cacsrx1]

This guy has followed me over on snowest namecalling and causing as much grief as he can. He doesn't own a Viper by the way, just one of the bashers over there FYI.

I have been a member on TY since the early 2000's(back in the 780 SRX days) ....and FYI you invited everybody over here. I have no problem with MODS doing there job.

 

[NOS-PRO]

I am looking for an AFR meter now. What are some recommendations? Figured the fuel injection would take over and compensate...but I want to make darn sure it's correct. Looking for something easy to read. Not to mention but seeing how much it changes between airbox's. Name some companies and prices....

Also, I think Ulmer has the programmer with AFR? Thoughts anyone?

Either programmer, AFR meter and fuel controller.... I like using my sled for testing to help others on the site make there Vipers run stronger and put the fun factor needle to it's maximum! Any sponsors want to help me out? It won't just be on asphalt...it will be put to good use in the wintertime also!

 

[cacsrx1]

A possibly easier way to test airbox configurations would be to place tape over the holes, make a couple of passes, remove tape and repeat. Might be easier than swapping airboxes back and forth?

 

[NOS-PRO]

This airbox comes out rather quickly. Think it took 6 minutes total. I have a skill cordless ratchet and it makes clutching, bolts and screws a breeze. It looked like a Nascar pit stop....LOL

Looking up Air/Fuel gauges on Ebay....do most of them wire right into the O2 sensor? I wouldn't want to tap into that, would rather weld in a new threaded bung. Saw some pretty cool ones that show the graph and digital number display.

 

[stingray719]

This airbox comes out rather quickly. Think it took 6 minutes total. I have a skill cordless ratchet and it makes clutching, bolts and screws a breeze. It looked like a Nascar pit stop....LOL

Looking up Air/Fuel gauges on Ebay....do most of them wire right into the O2 sensor? I wouldn't want to tap into that, would rather weld in a new threaded bung. Saw some pretty cool ones that show the graph and digital number display.

Anybody know how to make the Yamaha guages read out AFR?

 

[stingray719]

This airbox comes out rather quickly. Think it took 6 minutes total. I have a skill cordless ratchet and it makes clutching, bolts and screws a breeze. It looked like a Nascar pit stop....LOL

Looking up Air/Fuel gauges on Ebay....do most of them wire right into the O2 sensor? I wouldn't want to tap into that, would rather weld in a new threaded bung. Saw some pretty cool ones that show the graph and digital number display.

I believe I am going to buy this one, anybody try this one yet?

http://www.ebay.com/itm/52mm-2-inch...Parts_Accessories&hash=item3f15e39e25&vxp=mtr

 

[NOS-PRO]

Looks like a nice gauge

 

[sxr70001]

Do we need to go to a wideband o2 sensor to use an AFR guage?


Never mind, I see it comes with one. Cool!

 

[shagman]

NOS
Looks like quite a few people use this guage.

http://www.ebay.com/itm/AEM-6-IN-1-...Parts_Accessories&hash=item3f25debc11&vxp=mtr

 

[Srxspec]

If you are really wanting to fine tune you will want something that can tell you exactly what your AFR is at that particular RPM and that particular TPS reading.

A PCV, Autotune, and POD-300 screen can all be hooked together to adjust fuel, monitor AFR, and datalog it all so you can play it back on screen or download it to a computer and view it.

 

[shagman]

If you are really wanting to fine tune you will want something that can tell you exactly what your AFR is at that particular RPM and that particular TPS reading.

A PCV, Autotune, and POD-300 screen can all be hooked together to adjust fuel, monitor AFR, and datalog it all so you can play it back on screen or download it to a computer and view it.

How will the POD-300 be in the cold?

 

[Studroes144]

Pcv and autotune is an awesome setup..it basically does all the work for you and it will do it across the entire rpm range and at any different throttle position. All u do is plug the pcv into a laptop and accept the changes it makes