does anyone have a dyno sheet of a stock port 13brew in an fd with 9.0 rotors, non turbo with a header? i know i might get some flame suit for this....
i was curious how much power na the fd could make... tuned with a power fc, and using a racing beat header or something for example

 

why?

 

Thats exactly how my car was setup before but there was no point on wasting money to dyno

 

i'd guess somewhere in the high 100s. maybe 200, if you're lucky.

 

I did 172rwhp with an s4 n/a 6 port FC that had full exhaust with collected header, no cats, ported. I would expect anywhere from 160-180rwhp on a setup you are describing. It would probably be a low 15 second or high 14 second car, that's what mine was.

 

I would thinking 160whp even would be a bit optimistic, with lower compression rotors and in intake manifold designed for boost.

 

yes 160 would probably be optimistic. The FD 4 port setup has no VDI system like the series 5 and the Renesis engines. The VDI (variable dynamic intake) effectively shortens the intake manifold runners under high rpm to improve volumetric efficiency.

 

yes 160 would probably be optimistic. The FD 4 port setup has no VDI system like the series 5 and the Renesis engines. The VDI (variable dynamic intake) effectively shortens the intake manifold runners under high rpm to improve volumetric efficiency.

Well, the 6 port NA motors were/are set up with all the aux ports and VDI and such to make more low end power with all those closed and still top end power when open.

The 4 port turbo motors do not have this focus on low end power because they have the turbo(s) for low end and actually end up making more peak power NA with free flow exhaust because of the better flowing ports/manifolds once you open up the exhaust.

Example-

The most heavily modified 6 port NA set ups struggle to reach 200RWHP.

A ported S5 TII motor w/ NA rotors and stock S5 intake manifolds is easily over 200RWHP.

Ported Cosmo 13B with stock intake manifolds 250RWHP.

So, though the FD 13BREW will make more power with the turbos on it, it is still one of the best base engines for an NA build and will probably make 180-250RWHP depending on stock port to street port and exhaust.

The FD intake manifold is specialized for high rpm dynamic effect as it had the sequential turbos to carry the low end, so it will make great peak power in NA trim.

 

reason i ask is my current setup is stock engine with RB header, then stock main and catback( i have a RB catback but with the header its very loud still) . then i have a cone filter intake also.

before u flame! i picked up this car on a trade with the turbos being so shot they were literally pouring oil into the ehxuast). i tried a few cheap sets of turbos but they were all toast, so rather then letting car sit for months until i can afford a turbo rebuild, i took a header i had laying around and did some rewelding of the flange and voila the car runs and doesnt smoke!.

car runs ok on stock ecu, but feels like its running really rich i bet it would run alot better if i tuned it with the power fc i have sitting on the shelf. the butt dyno tells me it feels faster then my s5 na vert, but that thing is a boat. car deff feels like it has good top end power.

so thinking on pluging the power fc in and hooking up my wide band and seeing what it can do. ill probbaly just keep it na for winter anyway since its raining all the time anyway and i know my turbo fc's are enuf of a handful to drive in the wet.

 

those setups are not the same as his. The closest experience I have first hand is "turning off" the stock turbos. If you go into the Power FC Datalogit software and set your sequential turbo transition numbers all to around 1000, the charge relief valve will stay open permanently and the engine will build almost no boost. And let me tell you, it's pretty frickin slow at half a psi.

 

Your car is gonna be slower if the engine has to pull air through the complete turbo system (turbos, intercooler, piping etc) than if it was just getting straight air from in front of the throttle body.

 

I would say YOUR set up is nothing like his when you rig the charge relief valve open!

You are pushing all the exhaust through the restrictive exhaust side of the turbos in addition to making the engine power the turbos while they work like hell pressurizing your intake to .5psi while having a monster boost leak.

He is running headers to the stock 2 3/4" metalic high flow FD cat and a 3" cat back. Great exhaust flow for an NA with cat.

Tune it to ~13:1 under load, weigh the car with you in it and get some 1/4 mile trap speeds for an idea of what it is making power wise without having to pay for a dyno run. It will destroy the morale of 6 port NA owners and surprise many here :P

PS, I have owned 6 port NA 2nd gens and run my TII NA with turbo center section removed. 4 ports own, but don't take my word for it; go to the naturally aspirated performance section of the forum and see others dyno results.

 

Im running a PFC,RB header,High flow cat,3.5 exhaust and a intake on my 13B REW with stock ports but i bought the block used and the guy said it has 13B RE rotors is this good for a NA setup?
Also are the stock 850cc and 550cc ok to run with the NA setup?

Here are some pics.

 

nice radiator ducting!

 

Looks good!

RE rotors are same 9:1 as S5 FC TII and FD, but will work fine NA.

Get us vehicle weight with you in it and some 1/4 mile MPH trap speed once you street tune it.

 

lol heres mine i know the intake is in a real bad spot, was just somethign to get it driving downt he road with at least some sort of filter.

 

I might want to get the car tune and do the quarter mile just to get some numbers since no one done it yet.

 

I had my stock FD dynoed with a turbo transition problem. Only on the smallest turbo it made 160hp at the flywheel.

 

Yes, but you have to understand that the engine cannot possibly make more power than that as the primary turbo has hit its flow limit and is an actual restriction to flow.

Put and FD primary turbo on a LS7 (or any other motor) and you will also get 160hp as the turbo compressor spinning at 100,000rpm quite effectively blocks the engine from drawing in any more air than the turbo is providing.

On a side note-

Stock Cosmo 20B makes ~240RWPH, stock Cosmo 20B with turbos removed makes same peak 240RWP (just a lot less under the curve).

In the case of the Cosmo 20B, the exhaust restriciton plays a significant role as the turbo compressors have more in them.