I was wondering if anybody has some info on the power increase of aftermarket velocity stacks. I have seen the discovery automotive/$2000, technik/$1000, dinan/$5400 but none post the hp/tq increase. Dinan does but it is in conjunction with the larger throttle bodies and many other mods. If there is a 5hp increase I can't justify the buy, any comments or dyno results.
dinan doesnt sell the velocity stacks as a stand alone, they are larger diameter and wouldn't fit. WIth the throttle bodies (after everything else in their catolog) dinan claims 38hp.
Headers will get you a real 30hp, dinans are nice, but expensive. supersprints will make similar hp, maybe with a little low end loss, for a bit under $3k.
Mike
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Mike
91 M5 Alpine White II, Silver Gray 3/90 production
17x8/17x9 M system with PS2, 20mm touring roll bar; Ground Control Coilovers; EAT Chip, CD43; bmw/nardi blackline steering wheel, 3.8 Cam Gears
08 535i / 6 speed
Space Gray; Gray; Sport/Premium/Nav
00 M5 Ti Silver; Imola/black sportiv --Sold
Engine:
Supersprint Headers, Dinan CAI kit and MAFS, Throttle Bodies, Cams, Ported heads, Exhaust, Custom dinan software, Evosport Pullies, Dinan clutch and lightened flywheel; Ignition solutions plasma coils
Suspension:
Dinan Stage 3 with front and rear Strut Tower Braces, Beastpower Sway bar brackets, Dinan Wheels with 275/285 PilotSport, X5 Thrust arm bushings, Stoptech 355mm 4 piston front, 355mm 2 piston rear brake kit, Dinan 3.45 diff
Interior/Misc:
Eurodash, updated steering wheel, Bluetooth retrofit, Sirius Retrofit, hardwired V1, Widescreen Mk4 nav, M audio retrofit, Ice Link, BSW Stage 1 speaker upgrade, bmw towbar
Wasnt there a thread around awhile ago where someone lost some low end with velocity stacks and didnt pick up much of anything on the high end? I'll try searching for that, as it would be a good read for anyone who is looking to do the mod.
I have the velocity stacks, and a few other mods, compared to a standard car is offer more 'sparkle' up the top end and doesnt feel flat beyond 6,500 rpm. For me a nice mod as they sound fab, it propably loses a little at the bottom and picks up a touch at the top end. But lets face it how many people mash the throttle at 2,500 rpm ? If you drive the car with Sport on/off then this will have more effect at part throttle than any loss of torque from ram stacks. maybe you lose a few hp at full throttle sub 3,500 rpm, but worth the trade in my view
Its more of a balance change than mega performance mod comparing a stock car to the mods below
I have the velocity stacks, and a few other mods, compared to a standard car is offer more 'sparkle' up the top end and doesnt feel flat beyond 6,500 rpm. For me a nice mod as they sound fab, it propably loses a little at the bottom and picks up a touch at the top end. But lets face it how many people mash the throttle at 2,500 rpm ? If you drive the car with Sport on/off then this will have more effect at part throttle than any loss of torque from ram stacks. maybe you lose a few hp at full throttle sub 3,500 rpm, but worth the trade in my view
Its more of a balance change than mega performance mod comparing a stock car to the mods below
I'm surprised to see you don't have headers yet on you mod list/why? What brand of velocity stacks did you get and did you get a custom chip with them.
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