[slow4drsi]

HERE'S THE 1ST DYNO COMPARE TO THE RACE HEADER ONLY

2ND ONE IS COMPARED TO MY BASELINE WITH JUST EXHAUST

 

[Excalibur]

Why does it have a dip in it?

 

[klk15]

what are your mods?

 

[Excalibur]

Where's the afr?

 

[ryana1989]

Why does it have a dip in it?

:yeahthat:

strange

 

[slow4drsi]

Why does it have a dip in it?

yeah i don't know that's weird ,and my mods are ebay exhaust ,k intake and vibrant header with no cat, anyway there's an si there with greddy kit and emanage making 307whp and 233tq @ 9 psi , makes me want to go turbo..

 

[slow4drsi]

any suggestion why i got the dip?the guy at the dyno said it too , like the vtec pop twice?is it possible that hondata made a mistake about the flash?

 

[slow4drsi]

Where's the afr?

afr is 12.8 --13 but it went 12 like 7800-8200rpms you can see it in the video top side.

 

[hawjdude]

I'd look into this w/ hondata if i were you cause there should/will be more power to be squeezed out of this if there were no dip in the dyno curve.

any suggestion why i got the dip?the guy at the dyno said it too , like the vtec pop twice?is it possible that hondata made a mistake about the flash?

 

[malditoron]

someone make a decal... " i double vtec, do u? "

 

[Drisko]

If you look at Hondata's webpage though, there does appear to be a dip after 4500RPM on their graphs:

Reflash - K20Z3 06/07 Civic Si

 

[Mr. 122ci]

The "DIP" is when the car goes from low cam to high cam. thats why you hear the change over which creates the sound you get when VTEC hits

 

[Mr. 122ci]

when you slowly run it through the rpm band you can still hear the change over at 4500 and 5800.