Okay, first and foremost I know your mods. Second I am not JBP and this is not my product. Yes I agree about being different cars and tunes can be different, however only your ported head makes the difference. As for stating the size of the blower and how much psi you are moving, that does not mean anything. How much air are you moving through your MAF????? I do have a TVS, I do have a LS4 TB, I do not have the 3" intake, I do have 3" exhaust, I do have meth injection and only a 50/50 mix, I do not have a ported head yet. I have option B and extra heat exchanger, I am also running 24 deg. of timing and make alot more power than you are.
So, my disbelief comes from experience with tuning, and my own car says there is something wrong with this test. I think this is a great thread and when your done posting your findings if there is a clear advantage to having a certain header that is going to improve on my own setup, I am going to go with it, dont have to say anything about the JBP header, I just dont think the header is responsible for the power problem, I also dont think it is the best for the setup you or I have at this level. I applaude your time effort and expense with this project, but I am sure you can understand why I am skeptical. Your telling me that this header is responsible for all the power loss and that some stage 2 cars are faster than you are now???
Forgive me for calling BS, I should have really said, " hold on here, I think there is a flaw in the test" I apologize for that.

I agree, JBP has earned their shitty reputation but this has nothing to do with that.

So if anything I am being critical of the information being provided, that is how you get to the bottom of things, not by believing the first thing you are told or shown.

 

Deathscythe, you going to try modifying the JBP header like I told you too? Just wondering how that will help since it should help to stop the turbulent airflow.

Also, what ported head are you using? Got any flow numbers?

Instead of leaping forward, maybe you should take a few steps back. That header design was a great "IDEA", but unfortunately it has a few flaws that would cause the problems that Deathscythe is seeing. Just chill and let people think through this one.

 

sub'd... interested but still would want to see close to the same setup with jbp header. i know the timing had to be reduced a lot or something for you to loose 40whp+ more.

 

this pretty shock me, since a friend and i got a tvs here, we both got almost the same things except our header and dp, (he got CIA header and catless dp, and i got jpb header and CIA catted dp) and we got almost the same hp. i got a little more hp but he got little more tq

 

Probably Not.

How else can you explain a loss of hp, when nothing else changed but a few deg of timing (not worth 40hp) and the header...

Now, common sense tells me that since hes doing this tesing, along with EVERYTHING else he has been testing for, and how perfect he has been trying to keep everything, that he would check for exhaust leaks...


Do this, take a fully flexible straw, blow... nice and easy, right? .. now make a bend... it flows, but you can tell you have to breath harder, to blow teh same amount of air... now put 4 bends in it, and tell me how much your straw flows...

I mean.. it just looks like that thing flows like crap.

 

which sounds about right, but the JBP header does have a major flaw, good news is that it is fixable.

 

Okay Ralli, I will take a seat back and let it play, I will say, I am not attacking anyone here or any product, I am saying "why am I not having these problems?" " this does not correlate at all"
To not be critical of any information given to you is a mistake. To not question is a mistake.
I am done with this, when all header testing is finished, I will make my post in a new thread.
Good luck with the rest of the tests, looking forward to more information.

Short, you dont have a clue. end.

 

oh yea, truth. I will argue to the death that the TVS doesn't make as much power as a properly ported head.

I don't think anyone can give a reason that some people see these problems with the JBP header and others don't. But what I can tell you, is that I know why he's seeing these problems.

 

sub'd for Vibrant results. It's on the top of my list for possible headers. The JBP is a joke. Some of us have known that for a while, but nobody believed us. I also think it sounds like ASS, but that's just my opinion.

 

i can't wait till you try the zzp setup

 

I don't see how this information equates to twice the air... but anyways. Here's my dyno findings of the JBP header. There were timing changes from my baseline. This was done on the m62 with 2.75" pulley through stock exhaust and ramping to 16 degrees timing, I was able to advance timing somewhat coming from stock header. 11.8 to 12.0 AFR. I also got my JBP on the group buy and none of the primaries are touching. No bias here but I don't think it's fair to sway people's decisions away from purchasing something based upon the findings of one person. Having said that... I don't think what one person has to say should be the sole bases of your decision to purchase or not purchase something. I wouldn't tell anyone to rush out and buy something just because of my opinion of it. I'm sure the OP can agree with that statement.

 

so you gained 19hp from just a header? and running meth you only have 16* timing?? and put down 258?.......mayb im reaading something wrong but thats what it seems like to me

 

timing and header where the only things I changed. And i guess the day was different too....

 

gains look nice but why 16* timing with meth?

 

Using the smallest jet on a progressive controller. I've since gone to the TVS and a larger jet. I believe I was using the 3gph then and have since gone to a 5gph. With the 5gph i'm able to run 12.5 to 13 max timing on TVS 2.8 pulley under full load but I have no dyno info for the TVS. Obviously it's making quite a bit more power but to what the numbers actually are I have no idea.

 

i havent seen too many tvs tunes, but 12-13* of timing seems EXTREMELY low.

 

thats exactly what im thinking. even with the m62 that seems low to me, without meth on a 2.8 60lbs im running 22* with no knock and 11.6-11.8 afr

 

Maybe I'm a little on the conservative side .... but I was out tuning on a really hot day and was running 15 to 16 and getting small hints of KR at the top of third and a little into 4th so I pulled it back. I know it was due to the IAT's gettin up there but I like this thing to be good in all sorts of driving conditions whether it's 120 above or 0 degrees.

I have no idea what everyone else runs on a TVS but it seems to me this car just doesn't take as much timing as others I've tuned or seen logs of. Also keep in mind the stock exhaust and downpipe are not helping things and this is on a 2.8 pulley.

 

This is badass!!!! Cant wait to see what one flows the best.

 

id say the vibrant/zzp will yeild the most hp IMO

 

so how much power are you making?

im running twice that

 

I'd put my money on CIA or the Pacesetter race header

 

As for Raptors timing, alot of you are forgetting he is running the stock downpipe and catback, this is going to impact his timing dramatically compared to a three inch exhuast. I just finished tuning another TVS car, he has 3" exhaust and no meth and is running 17-18 deg. timing.

 

click...for more results

 

i really would like to see the dyno on my header. dont know how thats gonna be accomplished though