Thread: Not bad for $100 header

Yes, I remember. The free dyno day.

There are people on this forum that think Church dynapack is 20whp optimistic. So that means your 167 Church dynapack would be 147 dyno jet and Kyoshoboy 185 dynapack is actually 165 dyno jet, which is all wrong base on hard facts.

Franklin Stage 4 is called the extreme. The Stage 3 are the N1 copy.

The cams are set at +2.5,0 do to piston to valve clearance, which is limited with the 20V pistons.

nice numbers man.

dont let the haters get you down.

all these n/a dyno police are coming out of the wood works.

stratton.

So all you did to mod that header was header wrap? No changes to any of the pipe sizes and its a 2" downpipe?

I think some people are foregetting that those 20v pistons will help a lot.

I have dynoed on the big paks and the small ones I can tell you they read out the same. My tuner said a 400hp scca corvette was dynoed on the paks then went to a dynojet on the same day and read only 4hp lower.

You're being too sensitive.

Nobody on this thread is being a "hater". Its just a matter of fact that there is an obviously large margin of error when it comes to measuring hp with different tools, i.e. different dynos.

There are several articles written on this subject. That's why somebody posted up a "yawn" up above. Because this type of thread happens over and over.

I don't really care too much, since a high majority of cars on these boards never see a track that has turns.

No, the section after the collector and flex pipe was changed to a 3" going to the cat. The primary flange was also modified. I got a picture of the mod on my cell phone camera and will post later.

I don't really know for sure if this header helped with the high end, but it definately did for the low to midrange. The torque kicked in 1,000 rpm sooner.

You basically know more about dynapacks than most people, due to your first hand experience. Some people are making comments even though they have no first hand experience on a dynapack.

I"m not going anywhere or hiding.

I will keep this thread updated with new mods.

Always love that. Keep it coming!

My torque mimics your low end bump at 4500rpm on both my charts. It actually peaks at 4500rpm and then nears the same trq at 6700rpm like yours with a 13whp dip in between. This is with a +4-4 setting and the other one set at +3-2. At first I thought it was my CAI but I guess not.

I have not seen your graph, but what you are describing is exactly what a CAI setup would do on a VE. As a matter of fact the CAI does the same thing on Hondas. It will give a torque bump at 4500 rpm dip then pick up again at 5500 rpm. The Honda guys called it the "AEM double hump".

If you replace it with a warm air, that hump will go away and the torque curve will be smoother.

My torque curve looks exagerated with all the peaks and valleys,because the torque graph was compress and the resolution is high. If the torque graph was expanded to a full page it would look like a dynojet with no major peaks and valleys. That is the one major advantage the dynopack has over the dyno jet, the torque resolution.