Since alot of people in here recommend the Mild to Wild thread on FC3SPRO.com, i have finally read it. Now what is crossing my mind is that everybody seems to be running for standalone EMS’s early in their builds, yet the thread says that a stock ECU can actually run 400+ HP.

This interest me quite a lot since my HP goal is 350, but where im from its hard to find a decent standalone, and even harder to find someone who can work on it...

So my question is basically, is the Mild to Wild thread trusted to “stage IV”?

 

IMO, It's a good guideline but I wouldn't take it word for word. That thread is now 14 years old and pretty outdated.

While I don't doubt that you can make 400+ HP on a stock eco + a piggy back fuel controller, standalone ECUs have become more accessible/affordable and have way more features compared to stock ecu + piggy back. Which is why you're seeing more people convert to standalone. Myself included.

 

poor tuning is a major cause of engine failure, its the best insurance you can get for engine longevity

 

I made 315whp on stock ECU with a Apexi piggy back fuel component. I have FMIC, Full exhaust, intake. Stock turbo, stock injectors. I knew some ppl who have a upgrade turbo who wre pushing 350whp+. I bet 400hp might be doable with the right setup.

 

 

this was a long time ago but I believe my setup was

Greddy FMIC
Apexi S-AFC fuel controller
Apexi Boost contoller
FCD
550cc primary, 750cc 2nd injectors ( had them sent out and made bigger by RC Injectors )
Walbro 255 fuel pump
custom made intake
Racing beat Full exhaust / 3" Catless downpipe
Stock ECU

Thats pretty much it...

Car was great - full boost by 2,600rpm, full boost 15psi stay to about 5-6k then would drop from to about 12-13psi. But the 305rwtq made the car a blast to drive in city. A HUGE part of this will be getting the car tuned right. My buddy is an amazing rotart builder and tuner. So I was lucky to have him tune the car for me,

 

This, plus the 20 plus year old sensors, harness, etc dont help the cause either.