Premium Tuners kit install.Thunderheader jetting

Let me start with the engine mods (performed by J.E.T.) 99 evo
Andrews EV27 cam.
Heads shrink ported.
Crank balanced/trued.
Flat top pistons.
J.E.T. chromemoly pushrods.

Bolt ons
J.E.T. airstack.
J.E.T. intake manifold.
2 : 1 Thunderheader.
Dyna 2000 I SF ing.
K & N air filter.

With this being known. I was told that with Thunderheaders, you can go down 1 jet size(better fuel eco or stop rich condition??). Is this a true statement? if so ,which jet(s)? Right now my concern purchasing & installing the premium tuners kit & doing a correct install but need to "pick your brain" on the particular's of jetting with above mods to @ least put me in the "ballpark".
Currently the CV is bone stock. Runs good but know it can run much better. I am 100% cold weather rider unless it's raining.
Can you point me in the right direction with the jetting?
Thank you
J.D.G.

Your the 3rd person who recommended that. It must have some traction with it. I'm going to do some "homework" on that, just might be a keeper. I'll get back with ya.
Thanks

We are definitely on the same page, that thought crossed my mind also. A few in Dallas I can choose from. I've never had the bike on a dyno. What should I look for in a good Dyno operator/equipment?

In the mean time I'm going to go ahead & "pull the trigger" on the tuners kit. If dyno determines rejet/mod, I'll be ready.

when on the dyno ask the operator to due loaded step testing at diffrent throttle positions . at 20 and 30 percent loads this will get your slow jet air fuel ratio reading perfect . tunning the wide open is very easy its getting the cruise and transition point that is hard my thunder header was a tad bit on the rich side and had a dip due to its design . but pulled great up top . the dyno operator and tunner that i use and learn from is the best and well known teacher doc weaver we spent many hours on the dyno tunning my carb touring bike with a thunder header and a healthy twin cam . bent two tabs did a pull . bent three and did a pull and back off just a little on one and then back down the slow jet . the main was dead nuts i did have a step needle for the slide . two tabs does the trick almost all the time .p.s. the evos do better with this pipe than the twin cams due to the exhaust port and valve.

Oh wow I heard Doc is about the best in the business.

Yep best teacher and dyno man in the country bar none .my stock bike pulled some awesome numbers for a stage one .when he was done 82.58 99.60 torque .im getting 250 miles out of a tank now .a d v tune 3 is amazingly fast what he did on the dyno would have taken me 3 days to do .on the street with v tune 2.

Sure must be nice to live that close to somebody like that and be able to understand what he is doing.
Truly rocks.

Well aint that close bubba .froze my but off riding there this sat.lmfao 4 hours each way .but it was worth every cold mile .

I thought it was warm down in south florida

Started my ride at 4 am it was in the 40s got to orlando running 85 the whole way never got above 49 so the wind chill stayed in the 25 to 30 deg range

P.s. we dont own leathers in the south jeans and jean jackets .lol

Give me a break.
No way would I be caught without leathers.

Old school denim .dont even own a vest thats leather .two dam hot and humid.

Its hot and humid here. And I wear a leather vest for protection.
I have been down before and really got road rash on my back.
That was years ago. No more. I ride with at least a leather vest.
Make the OL wear one too.
We both wear full face helmets. Boots and gloves.
Not as tough as the Black top.

Lost a unlce in panama City who wouldn't wear a helmet.

You don't think I live near the coast. And it don't get how and humid here.
Problem is even with it Hot. If'n you go down with it 100* or hotter.
The blacktop will fry you.
Was headed home from houston, a dude laid his bike down. He was laying on the black top squirming. and couldn't get up
I went over and got some help and laid something under him to keep the asphault on the hiway from frying him as he laid there till the parametics could come and get him.
Seem it before too.

Guess everybody has to ride how they like.
When I was younger I work a blue jean vest in the summer just in case of that.