eric_m

i was driving to san diego on sunday for work and i was late so i was trying to go really fast and i got a big open stretch of road and wanted to see how fast my car would go with my awesome SPFR intake. yeah, i know it only adds 1 HP, but i have heard reports of people not being able to go past 110mph, so i just laid on the gas to see what would happen. well, even though it was kind of at a slight incline, the speed just kept going higher and higher. my wheels are 16" but the tires are smaller and lighter than stock so i know the speedometer was off. it past 120 like it was nothing and kept going. i was only watching the RPMs after that, since engine speed is constant for what gear you are in, no matter what size your tires are. suprisingly the car remained very smooth and stable the whole time. no shaking or anything. i would have backed off if it started making noise or vibrating wierd. but it never did. well, the tach passed 6000 and i kept going to see if there was still a rev limiter in 5th gear. yep. there is, and around 6400 or so, the engine cut out until the revs dropped a little. since i was still floored it quickly went up and hit the limiter again. by then, i knew what was going on and i let off the pedal and slowed down to a more respectable speed. i don't condone this kind of driving, but i was running late so it was ok. i just thought i'd let you guys know that 1.42whp really does seem to make a difference.

TheRedBox

wow now imagine if you had the AEM intake WOW..

Strange? everyone said 5k in fifth was the rev limiter round 110-115 mph or so. i dont want to try it out sorry! :oops:

projxB

hahaha man, we are never going to hear the end of this.

DibujoB

awesome Eric! I've never had it up that fast, but my 1hp SPFR intake sucks just as bad as yours I'm sure.

dinkjs

ya know if you were a noobie i wouldnt believe one damn word you were saying...but since you are a valid poster and exsperienced with this automobile.....all i have to say....i bet it was fun and i wanna do it too

eric_m

maybe my speedometer is way off, i don't know. all i know is that it went up to 6500 in 5th gear. and the reason i posted this is so you guys DON'T try this. i just wanted to let you know where the limit is.

BTW, i tried to reach the top speed in my WRX after it was all modified, but i got scared at around 145-150. they say the gearing allows it to go up around 170, maybe more with a strong enough engine and the right wind conditions. once you get past 120, there is a tremendous force of the air on your car that doesn't allow you to go faster unless you have a lot of power.

haha. i'm not lying. but seriously, don't try it unless you at least have good tires. the stock ones are rated at 85mph and are not safe above 90. actually, what i did was probably not safe at all. i shouldn't have even posted it, but oh well. i already did. be safe you guys, i just had 2 subaru friends die this weekend. my friend and i put a lot of hours into making his car really fast (he had a lot of money), so i feel partially responsible. very sad.

http://www.nasioc.com/Uploads/accident.jpg

hahajoey

eric, what kinda rims do u have?
i thought u had the grids in 15's on ur bag setup?
but i could be totally wrong. anywho.
how fast were u going do u think? when it hit the rev limiter?

xvolcomx88

what are the specs on your tires? you could probably use that one program on the saturn website to see how off your speedometer was.

its_ikon

that must have been going pretty fast.

TheRedBox

When my DSM was stock..i took it to round 155-160 then i got scared... it sounds like a whole lot more than 145-150.. but its not.. anything over 120-130 feels pretty much the same stuff just flys by faster. Either way, no more going that faster for again. I'm surprised that the WRX wouldn't let you take it up that high stock.. maybe because it's not as aerodynamic as the the 2g smiley bumper DSMs?

projxB

sorry to hear about your friend eric, that really sucks.

yanges

sorry about your friends eric....that is really a bummer....

bBted

eric, are you still running 205/40/16?

Guillo_xA

nice!!!!

pooder

AWESOME!! It's good to know our leetle box-cars can PERFORM!!

Now you need to go to the nearest CHiP officer and turn yourself in . . . you SCOFFLAW!!!

vintage42

Not so. The overall wheel diameter, or more accurately the rolling radius, affects rpm. Imagine how the rpm at any mph would be raised if you could bolt on little 12" trailer wheels.

vintage42

Top Speed [mph] 103
http://scion.jbcarpages.com/xB/2004/index3.php

xB — MAJOR TECHNICAL SPECIFICATIONS (Scion Tech Manual, pdf file)
Max. Speed km/h (mph) 165 (103)
Max. Cruising Speed km/h (mph) 145 (90)

cvrefugee

My car shakes above 70mph (stock tires). I did make it to 110mph, however!

hsoj_v

You SoCal guys drive fast down there on normal freeways. I was just down there on vacation back in August and freeways down there are from 80-90mph mostly on open freeways. Geez...

ddsboi

yea 80 is about normal speed down here. Funny thing is, for some reason its the SUVs that are driving like maniacs.