I have finally decided to get the Evo stage 4 for my X50, but can't decide if I should get the optional race program.

According to Evo's website, the Race program increases hp from 600 to 615.

This is an estimated increase at the crank, so I would assume hp at the wheels would be closer to only 10 hp. Is this accurate? I remember BuddyG's dyno sheets reflect a 14 hp increase on the race program.

Can you seriously notice a 15 hp increase?

Is the increase all at the top end or is the midrange improved as well?

Has anyone done back to back tests in the real world?

It just does not seem worth the $750 for the race gram, plus spend double on race fuel ($5 versus $2.50)

What do you guys think? Are you happy with the race program netting only another 10 rwhp? Will this make a difference in a close race?


Thanks
Rob

 

it should be more like 50 hp. i have it i can tell.
i use 100 octane @ 3.59 a gallon.

 

Mark,

50 hp would be great, but I am thinking it is closer to their quote online. I am also going off of BuddyG's results as well. Have you dynoed your car prior to the race program by chance?

Where do you feel the most improvement running the race program? BTW, the 100 octane here is about $5 gallon. Ouch!

Thanks
Rob

 

I have the race program on my stage 4 and only notice the difference when running in 4th, 5th and 6th at 4k rpms or so.

The car seems to feel stronger in these gears but in the UK im
having to pay around $ 27 per GALLON for the sunoco gt plus fuel,
so i wont be running it on the race program much!

 

$5 a gallon!.
You dont know how lucky you are.

 

Exactly...we get raped here too

 

I didn't know us guys had it that good in the U.S. in regards to fuel prices.

I remember gas being about double in the UK, but $27/gallon for race gas is insane.

Back to topic. Anyone else have feedback on the difference the race file make?

Thanks
Rob