Overall guys boths sides are right. If you add 3 mods or more and don't restrict the boost, the stock ecu will become a liability. That is the fact that Robinette is claiming! However if add 4 or more mods and restrict the boost to stock levels, the engine can still be operated in the safe zone. That is a fact. So really no one is wrong.

 

Nope. Some people have gotten spiking well above 10 psi with just a downpipe and cat-back -- two mods that virtually every knowledgable FD owner has. Counting on the 3-mod rule, you would think you were safe instead of dangerously spiking. And then you start qualifying it by saying it depends on what 3-mods you do.

I'm not sure why you seem to be defending it. It's an invalid rule based on faulty info/assumptions and should be removed from circulation, period. The true and correct rules that should be propagated are:

1. that the stock ecu can handle all of the bolt-ons at 10 psi with a fair margin of safety. People running a midpipe must be very careful to prevent spiking/creep. Owners are encouraged to go to a dyno with a wideband sensor to verify safe a/f ratios (in case of mechanical failure in the system), especially with a full exhaust.

2. you should not run more than 10 psi on the stock ecu, regardless of number of mods.

 

how much power are you making with that setup

 

how much more power over stock are you making

 

My guess is that I am at 260 - 280 to the wheels. The car has beaten STi's, M3's, a late model SS, and stayed neck and neck from 15 to 80 MPH against my friends lightly modded supercharged 03 cobra (est. 400 RWHP). But after 80 I got slaughtered .

Soon I will be in the market for PFC and catback and hopefully bump my RWHP to 330.

Edit- I kinda like staying at 10 psi... All of my mods just make the car breathe better, thus making it faster without adding more stress (stock boost)

 

I made ~265 rwhp at 10 psi on the stock ecu with downpipe, RB cat-back, PFS intake and SMIC. That is a 45-50 rwhp gain over stock which is pretty substantial for the dollars involved.

 

agree. I think manny/SleepR1 tracked the pee out of his R1 for years on stock ecu. Usual mods, and stock IC, HFC as I recall.

 

Have you seen the stock cat or weighted it? I'm researching throwing on a highflow right now...