Better Performance Mod: Dual Vanos or Conforti Shark Injector? Or other?

[tomjonesrocks]

Have been reading with interest those of you that have done the Shark Injector (though buying the battery just to do the install is a bit of a bummer) -- but a BMW Master Mechanic that lives in my neighborhood is strongly selling me on the Dr. Vanos (Dual Vanos) modification.

Any opinions which would be the most dramatic/best bang-for-buck modification if I was going to do one? Or should I be considering something else instead?

Opinions appreciated!

[Hermes]

i dont think that vanos rebuild would really get you more performance like sharking would do, I think thats what you were asking about. Either Dr Vanos or Beisan Systems should be done anyways at some point just to restore the power that you will lose when those seals eventually go bad.

[zj96sc]

The only way you'd feel any serious gains from the VANOS kit is if your seals are in extremely bad shape. Fixing that will restore cam control and some low end torque.

I think you should avoid performance mods until the engine is healthy, and least this is how I've always tried to operate. If you've got substantial vanos rattle or inconsistent power delivery from 2-4k, I'd focus on a VANOS kit first. With these engines its never a bad idea anyway. Then, by all means, shark away!

[jreyes19]

^ like everyone here is saying you don't get a real gain by doing he vanos, but you do get a better engine feel

I hear only good things about sharking the car
also both will cost about the same price, dr vanos (-core charge) and conforti shark injector

Good luck in your decision and IMO they both only better your vehicle, so I would just do both but in the order of Vanos first then Shark, to get the most power and health out of your engine

[danewilson77]

IMHO, I would do the maintenance, prior to the mod.

[kayger12]

IMHO, I would do the maintenance, prior to the mod.

This.

[UdubBadger]

what kind of numbers do you guys see out of the shark?

[johnrando]

This.

This this.

[mikeyb74]

IMHO, I would do the maintenance, prior to the mod.

I agree

[nike001]

Spend the money on the Vanos kit. It is not a modification. They are only seals($60) that replace your old and maybe worn ones, and the rattle kit($60) which stops your weird rattle you get between 2500-3000rpms

Also, get the rattle kit & seals from beisansystems.com other than the Dr. Vanos ones.