These numbers are just not true for the BP kits that are out there also ignition timing plays a

There was one car that F.I had that trapped 126 MPH I haven't seen a B.P car yet . A GTM stage 1 TT trapped 127 MPH on pump gas 93 , basically what I'm saying is you can't base power from these kits on trap speed alone. This is because it's just not enough boosted cars in our community going to the 1/4 track.


To the O.P you need to contact speak to both vendors and weigh your options come up with you're own list of what you're looking for. from both kits
Tony from F.I and Sasha both offer excellent kits and top notch customer service.

The fact that this guy ^ is going from a stage 3 TT setup to a siingle has to say something. Granted its not from an FI kit which will be a better quality kit.

Squeeze, what size snail are you going with on your future setup?

Honestly, any one who has the FI kit is going to ******* love it and post they do. Anyone with the BP kit is going to do the same and say the same. You cant go wrong with either.

Its like fake boobs compared to real. They are both tremendous amounts of fun. :tup:

My car trapped 126 @ 10psi on my 91 octane tune.

well I stand corrected on the power numbers then. I had only seen the BP dyno on their own Turbo thread, not customers cars. Maybe they should change that!

I am going with a 6766 1.32 A/R

Cant wait to see your results. It will be awesome to have someone go from twins to a single and provide feedback.

Its going to be nuts. Have you seen what I did with my 6266 at 19lbs at 4k? Your setup is going to punch you in the face! :eek:

That's the other thing about the BP kit. Sasha changed the turbo at some point to a 1.15A/R. Some of us also have the ball bearing turbo and I believe his original graph is journal bearing. These options really make a difference in performance.

Bottom line both kits are fantastic. The FI kit is probably the best option on the market but it comes at a cost. I didn't have Tony price me an option since it doesn't currently fit a G37 but based on what comes with it I would assume $11-12k out the door for what I got from Sasha for $8k. Add on to the fact that I haven't seen anyone install a FI kit themselves, so add another probably 10-15hrs of additional shop labor and you get to 4-5k extra.

All said and done the FI kit kit is probably slightly better. $4k better is a decision only you can make.

No way you are disappointed with either.

So excited to see numbers on a big boy turbo setup

Op there is a lot of good information that has been presented and should be considerd here. I just want to add my two cents in that you really can't compare the two kits againts each other other than anacdotally. A better comparision would be between the top two single turbo kits and and likewise with the twins. It should be obvious that a twin kit will cost more than a single, you just need to do a list of all the parts and that alone will explain the increase in cost. That said, the FI kit is fairly priced for a top quaity tt kit. Your choice should be based on what is best for your wants, needs and desires, our opinions are just that. The facts are, both kits rock and after 10k flawless miles on mine I could not be any happier. It has been worth every dime I spent!!! Also, your budget should be between 15 and 20k if you want to do it right. I wish you the best in which ever choice you make. Boost on.......

Thank you all for the feedback, like I said im still new to the FI chapter in life with my z. Im going to continue my research. You guys have def helped alot!!!!!

Yes I saw all the tq you made at 4k at 19 pounds :eek:. I will be my results for sure . I plan on starting at 15 PSI low boost and go up from there to around 24-25 pounds of boost.



I am excited my self can't wait I really believe the numbers are going to be great.

:shakes head:dammit mr squeeze can you stand still so we can caught up.lol
getting the car back some time this week with some 600+rwhp numbers and now your going bigger.

I think this thread can be simplified...

OP, do you have 6-7k, or do you have 10-11k JUST for the kit itself? If you have 10-11, FI, if not, BP