erv187

is just fully rebuilt my '90 turbo II, and got a large streetport done. so everything else is completely stock (turbo, ecu). is it safe to run stock ecu with that port done. or should i get some type of piggy-back or stand alone as soon as possible.
by the way, i'm not running the car hard at all (max 6.5k shifts, if ever).

RotaryRocket88

iTrader: (7)

Porting jobs vary so much, it's hard to say just how "large" large is, but I wouldn't worry too much about running lean unless you're running a lot more than stock boost without much in the way of fuel upgrades.

fredox19

iTrader: (8)

What about the mazda trix large street port template would you consider that large? Just wanted to know cuz I"m buy that in a few months when I rebuild my engine.

Slow Rotor

I was under the impression that a stock ecu wouldn't run a ported motor? I don't really have any knowledge in this department but when I got my engine built they made sure I had an aftermarket ecu before they did the work

arghx

iTrader: (3)

it'll run a ported motor fine, you just need to watch for boost creep if you open up the exhaust.

Aaron Cake

iTrader: (1)

If you're on the stock turbo, then the stock ECU will be fine. You'll need larger secondaries, upgraded pump and then some way to control it (S-AFC....). Also port that wastegate and get an FCD.