Ive been waiting for something this!

 

Kevin,
If you are referring to my car for this comparison, then its a 5 speed . Good info!

 

This is more of an apples to oranges comparison. Any time you start mixing different size turbos and different manifold types you start skewing the data. The dyno graph would be more meaningful if it was comparing:

1. Turbo spool-up using different size turbos on the same type of manifold (i.e., log or tubular).
2. Turbo spool-up using different types of manifolds on the same size turbo.

Also, the type of gas (i.e. 91 vs 93 vs 100 octane) can influence turbo spool-up as you can advance the timing more with higher octane gas causing the turbo to spool quicker.

Just my .

 

it is a relatively straight forward comparison of turbo spool on the stock 2L. take what you want from it. no one is ever going to do a one after another comparison of all these turbos in a controlled enviroment on the same car, so i figured some of the data logs i have done over the past summer will help someone make a decision on what turbo to use.

 

Consumers also need to factor in the exhaust manifold design as well.

 

this was never ment to be a controlled test, its just a comparison of different spool characteristics of various turbos. if you buy all the turbos and manifolds, i'll do a controlled test.

 

I am not hating on you my friend. I am simply saying that these types of comparisons are more meaningful when "like" products are used. Great job pulling this info together though!

 

haha yea really

 

The general idea can be seen and confirms the norm.

 

great info..Gave me some insight into a few turbos i was considering..THanks..Justin

 

What I find very impressive is the fact that this particular BR 35R turbo kit spools quicker than the OEM IX turbo. Their log-style manifold in this kit must be pretty superior to the OEM log-style manifold, because typically speaking a GT35R turbo itself will take longer to spool.

 

[QUOTE=sEvoIXnTurboS2k;4945793]What I find very impressive is the fact that this particular BR 35R turbo kit spools quicker than the OEM IX turbo. Their log-style manifold in this kit must be pretty superior to the OEM log-style manifold, because typically speaking a GT35R turbo itself will take longer to spool.[/QUOTE

The 35R spooled about 1500 rpm after the OEM 9 turbo.

 

good info!

 

[QUOTE=prostcj;4945802]Ok...let me break this down for you:

1. Although the OEM IX turbo may have hit maximum PSI (full spool) sooner than the 35R, the 35R still spooled quicker as evidence by the dyno graph. The 35R was making ~21psi @ 3350 whereas the OEM IX turbo was making ~21psi @ 3400.
2. The 35R only gained ~2psi between 3350 and 4800, and in my books that is pretty darn close to be fully spooled.

 

yeah, uhh, the 35r is the one way to the right. sorry if the colors of the plots aren't that great. matlab does a terrible job of making jpg from figures.


35r with log manifold = full boost at 4800 rpm. stock = 3500.

the 35r has like 1 psi at 3500 rpm...