| First off congrats Seb on the great numbers! Good work. It's Great to see what these turbos can do. Here is a comparison pic I did just for fun Overlaying Brett's 2nd Sport 700BB run also made at 24psi. At first I thought his looked a lot less laggy, but after properly proportioning/overlaying the runs it's not that drastic. The two lines of interest are the dark blue and light blue lines. It does look like between 3700rpm and 5000rpm Brett’s makes a little more power (Almost 60hp more at 4500rpm). At 5000rmp all hell breaks loose on seb’s car though. Obviously Seb’s car has a lot more work done to the motor, and has the benefit of the cams and Inconel manifolds, so I find it curious Brett’s would spool quicker. I am no expert though so I’ll let you guys further interpret the graphs.
Seb's Run
"A/F ratio was an average of 11.5 and base timing was set to 15 degrees. The car made 669 RWHP and 543 RWTQ. The graph only shows the HP figure and it shows the amount of boost the car made in relation to the HP curve. BLUE is power and green is manifold pressure (boost). Oh yeah....NO nitrous either."
(24Psi) Seb's Mods "Specialty-Z Race Short Block"
Custom Ross Pistons 8.5:1 (87.5mm)
Eagle Rods
Specialty-Z Heavily Ported & Polished Heads w/ Race Valve Job w/ Oversized Valves
Match Ported & Polished Lower Intake Plenum
NISMO 740cc Injectors
JWT Sport 700 BB Turbos
JWT 500+ Race Cams
JWT NOS Spool Up Kit .032 Jets
Specialty-Z Inconel Exhaust Manifolds
JWT Dual POP
Custom JWT ECU & Apex-i AFC
UR UD Pulley
Blitz SBC-iD Boost Controller
HKS Twin-Power Ignition Amplifier
Specialty-Z Split Pipe Down Pipes
Specialty-Z Test Pipes
Specialty-Z (LaBree) Catback
RPS Twin-Disc Carbon Clutch
Hose Techniques SVH (Red)
Deleted EGR System
Stillen Intercoolers & Ducts
Stillen Oil Cooler
Koyo Radiator
Stillen Lower Radiator Pipe
Powdercoated Engine Parts
Noltec Motor Mounts
The "Seb" Electric Fan Kit
A/C Removed
HKS SSQV BOVs
Power Trix Ground Kit Renner's First untuned run (notice the discussion in the thread in regards to how his spooled quicker then the car with the dupree manifolds
[ http://www.twinturbo.net/net/viewmsg.aspx?forum=general&msg_id=1308201 ] Renner's 2nd round (used for comparison)
boost was at 1.65 bar (24 psi), timing set to 19 degrees, AF graph available at link
[ http://www.twinturbo.net/net/viewmsg.aspx?forum=general&msg_id=1332159 ] Bretts Mods Engine: Twin pop intake (single maf)
Stillen Intercoolers
JWT ECU
Nismo 740cc injectors
95 fuel rails with machined lower plenum
JWT 700 BB turbos
Ported exhaust manifolds
Koyo radiator
Greg Dupree split runner 2.5" downpipes
Stainless 2.5" midpipes
Stillen 2.5" cat back
RVM hard pipes
Greddy type R bov's
NGK copper plugs, heat range 7 Electronics: Apexi AFC-II
HKS EVC 4 limited edition
AEM wideband O2 sensor & readout
Defi BF boost gauge
Defi BF EFT gauge
Defi control unit
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