So, with the VT2 you are thinking of a fan on the front air/water exchanger for stop and go type traffic? I assume it gets plenty of airflow at speed....the only real issue here (ESS has tuned it to be safe in just about any environment) is while sitting in traffic (or the track grid queue) you will get hot air at the AIT sensor which causes ECU to pull timing which loses power significantly. A fan might prevent that?
I have purchased but not yet installed a VT1, which is why I am planning water injection. The calculations for the V10 at 5 psi and 8500 RPM result in a point way to the right hand side of the compressor map (V3Si), making almost as much heat as airflow. The S85 almost needs a bigger blower, except the next step up in the Vortech catalog (v7 Ysi) looks like a serious packaging problem in the engine bay. Or two blowers like G-spot, which would then price it out of the enthusiast market. So, long story short, without an intercooler I expect some timing-related (safety-related) power loss at high ambient temps during multiple high RPM full throttle runs, which a very mild water injection system might prevent. I hope.
THanks for reading, and again if you know I am spouting crap please call me on it as I am still in the research/learning phase.
Tuning for additional power using 100% meth in large quantities is a whole other game, more like nitrous oxide than anything else.
Have no decided if the fan will be on ony when at a standtill, maybe it will be activated via a switch in the car. The general idea is to cool the air prior to the heat exchange but we shall see.
I think you meant G-Power as G-spot... well lets not go there
I would get the heat exchanger unless your adament on just using meth to do the same thing.
2006 Low Compression Supercharged VT2-650+ BMW M5
Performance: ESS Supercharged VT2-650 / Custom ESS Alpha N Tune / Sprint Booster V2 / RPI GTS Exhaust / RPI SV1 Oil Cooler / RPI Jet Hot Coated Headers/ Howerton Engineering - Aquamist HFS-3 Methanol Injection System.
Engine: 10.1:1 Low Compression Engine Build / Mahle Custom Pistons / Carrillo Rods / Custom Fuel System / Custom Rod Bearings.
Suspension: KW V3 Coilovers / Dinan Rear Sway Bar / Dinan Front Roll Control / Dinan Monoballs.
Handling: Daily Setup: 3 Pc ADV.1 05 wheels F 20x9 / 255/35/20 R 20x10.5 / 295/30/20 / Michelin PSS Tires / 12mm Rogue Engineering Spacers.
Track Setup: Apex Arc-8 wheels F 18x9 / Hoosier A6 P245/40ZR-18 R 18x10.5 / Hoosier A6 P315/30ZR-18.
Exterior: Vorsteiner Rep Hood / Gloss Black Roof Wrap / Smoked LED Side Markers / Limo Tint / Custom Headlights with Orion V2 Rings / LCI Fins / LCI Clear Eyebrows / Custom Blacked Out LCI Tail Lights and Miranda Bruce V6.1 Cables / Hartge Rep Urethane Front Lip / AC Schnitzer Roof Spoiler / Matte Black Kidneys Grills / Gloss Black Side Gills / Gloss Black Rear M5 Emblem / Black/White CF Hood &Trunk Roundel / Rear Bumper Mesh / M5 Puddle lights / Electric Fold Away Front License Plate Frame / CF Rear Diffuser / Gloss Black Side Skirt Extensions /CF Rear Side Extensions.
Interior: White LED Interior Lighting / Black/White CF Steering Wheel Roundel / Alcantara-CF Flat Bottom Steering Wheel / Handbrake Handle/Pedals / Hardwired Valentine 1 / P3Cars BMW E60 Vent Integrated Digital Interface / Custom SC Kit Color Scheme.
Programming: Mirror Fold-up / Window Roll-up / Sunroof Closure / Auto S5 at Start up / Euro Launch Control / iDrive Acceptance Delete / Rev Limiter 8600 / Top Speed Limiter Removed.
Braking: RDSports 6 Piston F 380/35mm and 4 Piston R 380/32mm Big Brake Kit.
Misc Upgrades: Soft Close Doors / HUD/ Active Seats.
The journey continues......
Dynojet 698rwhp / 498ft lb trq.
Old 60-130mph 8.29secs....new time to come.
2001 Porsche 996 Twin Turbo, GT3 rear sway bar, Rennline CF front strut bar, Tarrett drop links and toe links, GT3 control arms, BC coilovers, Sharkwerks EVOM tune, RPi exhaust, Sharkwerks sports clutch, HRE 540r wheels, K16 Billet turbos, GTRS Intercoolers: 535rwhp, 550ft lbs trq.
2004 Infiniti G35 APS Twin Turbo with built motor and fully built transmission. 520rwhp and 550ft trq. SOLD but not forgotten
2006 BMW M5 VT2-650 low compression supercharged: 698rwhp on Dynojet.
Last edited by ACG; 20th April 2012 at 10:43 PM.