foxracing515151

So ive got this race coming up against my buddy were very close in wheel hp and weight. How beneficial would it be to turn my boost up another lb? Im at 22 lbs now recently tuned by ivey. Could I seriously mess the tune up? Would it be worth doing? Thanks

silver_ek

1psi isnt really going to matter. Just get a good launch and dont miss shifts.

elim0

yes it can, my friend boosted his up with his ebc and it messed up his timing and all sorts of things.. he boosted it 3psi + and the car started to stutter as he went higher in the RPM range.. dont do it !

ProPilot04

iTrader: (11)

No you cannot "just turn up your boost", and whether it makes a difference or not is irrelevant.

If you're looking for that little bit of a gain, then upgrade the driver, not the car.

adriano_917

iTrader: (14)

Is he driving an Evo too ? If so just practice your launching and you're set

CurseDSM

iTrader: (3)

If you have your car tuned to a certain psi, changing 1 psi will matter. Think of it this way. Imagine your making this perfect glass of chocolate milk. You add 2 scoops to 1 glass of milk. That is the bomb right, what happens if you add 3 scoops of mix to the glass of milk? Exactly its gonna be more chocolateity. Now use the same analogy with your car. Your afr is told to be set at say 11.5:1 and you decide to go up 1 psi. With that said your afr will change being your forcing more air without changing the gas mixture.

see post above

Yes this is because your forcing more air into the motor. Car will change from say 22 psi to 25 psi. It will sputter and spit being yeah its forcing the car to do something it isn't told to do.

Joshthree6three

iTrader: (1)

Pull out some weight in the car. Ie spare tire, jack, rear seats, trunk liners, passenger seat.

Easy to do

timsen

I wouldnt do it, not worth it imo, but im no expert on this!

hiboost2.0

iTrader: (15)

Cursedsm is 100% correct. To add onto what he's saying is that also in a tune depending on how much load and what rpm you're at the ecu refers to a specific set timing and fuel number. By upping the boost you're putting more load on the car going into "foreign territory" that your tuner has more than likely made extremely safe just in case if you accidentally over boost or something. Which will more than likely make your car slower. Plus there is something that the tuner can setup called a "boost cut" which is in case you over boost you'll hit the boost cut, hitting the boost cut feels like you hit a brick wall, saves your engine but not good for racing.

Just practice your driving and take some weight out of the car.

Tuxevo

iTrader: (8)

It's not ideal to make changes to levels of boost without appropriate tuning, however you will see a larger variance in boost simply from the change in temps that the seasons bring.

matrho2792

iTrader: (30)

Best mod for a car is a driver mod, just remember that

AdamAndEvo

Cars got a Mass airflow sensor .. So if u add more mix to your "chocolate milk" it auto adds the perfect amount of milk to keep uour drink "the bomb" wouldn't it? now i have no idea wht your knock count is so if your car hits a fuel cut then just dial it bck. Its one race you paranoid panzys. 1lbs not gonna do anything.. My advice Ditch your spare tire.

sho669

iTrader: (34)

+1

If you happen to look at your fuel and timing maps you'll see clearly what Cursedsm and hiboost2.0 are talking about.

Been going through this with a friend of mine on his VIII, he'd crank up the boost and the car would go slower, finally got tuned for the "high boost" and now he wonders why he ever messed with it before.

evobros

iTrader: (25)

i want chocolate milk now!!

lilplaya

do not do it! i asked my tuner if i could a while back right after i got my tune he specifically told me not too