ajordansap

Question:

Is it possible to get 300hp to wheels without upgrading turbos?

Car is in the shop as I write this and its already being upgraded to XS-Power 3" to 2.5 Dps with complete Twin 1 2.5". Also will be adding APR Stage 2 tune. In addition, K&N air filter in existing air box. APR bi-pipe is also in process.

What should be my next step and am I shooting for the moon trying to achieve 300hp to the wheels without turbo upgrade?

Please help soon as I have one week to finish this build and a limited budget

The R

Even though dyno numbers vary from dyno to dyno, it's possible on race gas w/ the APR tune. A decade ago (damn, has it been that long?) a forum member and I dynoed on a mustang dyno one car on the APR stage 2 pump tune (93 pump) and one on the race tune (105 octane fuel). My car on pump made 272whp/347whp, his made 306whp/366wtq. A stock car made 200whp/220-240wtq if I recall correctly. Both cars had just chip, cat-back, no downpipes. I ended up going K04s before getting a chance to dyno the K03s with turbo back exhaust.

Honesty if you're going to keep the car a long while, K04 or something bigger would be the way to go. Just so you don't send your K03s to the mooon. I have over 100k miles on my K04s and they're still alive and kicking.

ajordansap

I appreciate the quick reply. So I think my final question will be is it absolutely necessary to add a FMIC to run at Stage 2. Will there be any HP gain? Or is this something I can hold out on until I get bigger turbos and go stage 3?

The R

You don't need an FMIC or upgraded SMICs to run stage 2. Would it help sustain the performance better over multiple pulls? Yes, but the car will still run well w/o them at stage 2. I have ER SMICs on my car currently, but I ran stock ICs on my S4 when stage 1, 2, 2+ & 3. If you go to K04s or larger, I would upgrade. So, answer is....you can hold out till you upgrade turbos. As long as your stock ICs aren't leaking badly or something.