Still débating between the sc route vs entry turbo route

can anyone provide a clear dyno overlay with a log setup (FB, PFab, IP) vs sc setup (SOS, Vortech)

would like to know how PTE5758 would do vs T-Trim / novi 1200 @ approx 15 psi

some says log spools horrible, but does still it "spool" (i know it's incorrect for a sc) aka build power faster than sc?

what about heat management?

still debating between full blown stage 1 and SOS tuner.

Thanks for the input.

 

Here's my dyno chart of a SOS tuner kit, Novi 1200, 15.5psi. Note that there ain't much happening down low. My understanding is that a 5857 spools quite fast, and even on a log setup should be substantially more powerful at the low end / midrange if tuned for a comparable max boost level.

 

Theres no comparison, even with lag a turbo smokes a s/c all day.

Heres my old turbo dyno @ ~13psi PTE 5857, log mani fully spooled at a tad over 4k rpm..
my supercharger doesnt hit 13psi until 8krpms.. do the math lol

[attachment=16700:Copy of 4_27_10.JPG]

 

The search button is your freind

https://www.s2ki.com/s2000/topic/802...e-compilation/

 

Is the dotted overlay here a supercharger at 13psi?

 

and this is why i love the FI forum. the handful of regulars are hilarious and realistic.

agreed 100%, if you are comparing straight dyno numbers, a proper turbo setup will shit on a sc setup same boost. however, there are other factors, which can greatly effect what you want to choose.

if i was into road racing, i wouldnt hesitate, id go sos 1200 no doubt. as for people saying reliability of the two, well screw that, once you mod something shit tends to break.

but being i have been NA, roots blown SC, and now divided bus turbo, lemme just say the street driving fun factor is off the damn charts with my current setup.

 

No question a turbo makes more area under the curve, looks good on paper too. Good thing we have a transmission with different gears to choose from, unlike the single gear we use on a dyno. Lets go on the street in the real world, starting at the same mile per hour, you start in 4th gear at 4krpm and I'll start in 3rd about 6500 and we'll see what "smoked" looks like in your opinion

Point being, yes there is more factors involved in the outcome of performance for your car when its not attached to a dyno. But yes from a pure performance standpoint and all things equal, turbo is more efficient and usually has a broader power band, unless its over sized or undersized. picking the right turbo and manifold is crucial towards having an advantage at the same pressure level.

 

no thats just same setup at 8psi

 

Honestly I dont think you being in 3rd gear is going to make much of a difference.. you will pull ahead for a second or 2 (end of 3rd gear) and then the turbo car will pass you. Ive had both setups so Im not talking shit, just stating my real world observations.

this video is a good example...

http://www.youtube.c...h?v=A-O4oA6egeo

Believe me my goal is to make my S/C setup as fast as it was turbo, and by my math I would need to be ~500whp SC to beat a 415whp turbo in a straight line race.

 

Put that giant wing on the turbo car and see what happens

It really depends on the set ups, in my experience its much closer between my turbo friends, some are closer to comparable then others. Run a smaller turbo like a greddy kit at 14psi or even a gt30 with a log set up against a given size centrifugal blower at the same boost, its sort of pointless to compare really and I made the mistake of biting on this thread