dmyruski

I have a full Zex EFI system and I have access to a NOS TPI Plate, so my question is: will I run into any problems mixing the two? Got the zex setup cheep and thought it would look nice with a plate instead of tapping the zex nozzle into the intake. But the jet sizes for a 100 shot are totally different on the zex web page vs what they call for with the NOS kit. Anyone know if this will / won't work? Thank you

nossbc

iTrader: (1)

it should work...what size selenoids are they from zex?
also the nos jetting is real rich...but you can start there.
the tpi plate is good for 250hp but the distribution at those hp jets is not that great.
I done a 200 on hsr intake and dist looked fine but never sprayed past that.

dmyruski

Not sure on solonoid size, its all a self contained unit with a built in WOT switch.
For a V8 Zex has 100 shot= F.030 / N.046.
The TPI plate kit has 100 shot= F.042 / N .055
So TPI kot is defantly a morw rich mix, is that why itnwould take more F/N to get a 100hp shot??
Also zex says retard timing 1° every 50hp and use one step colder plug. But the TPI kit says keep both standard. (Zex is a universal kit so I'm sure that rule of thumb info not needed for the TPI correct?

nossbc

iTrader: (1)

those are pretty vogue guide lines as heads, chamber design, compression, fuel, etc etc determines how much timing you need to pull
usally with a 100hp pills just up octane to 93 and should be fine on tpi set up.