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Thread: RPS ZX3 back on the dyno and 1/4 mile Reply to Thread
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Topic Review (Newest First)
01-27-2014 11:03 AM
focuzed1 i have looked into the boost by gear.. they make boost controllers that do it for you but they used to be crazy expensive. tis why i never bought one. and maniac. to answer your question about the tq. having lots of tq on a fwd car hurts you alot of the times because you cant get it to hook so you spin tires (like id do). and it doesnt matter how much power you have. if you cant get it down it means nothing. So if you high hp typically helps you in the higher rpm range and higer speeds so you acelorate harder at the higher speeds. tis why his trap speeds are so high. he pulls harder and harder as he climbs in rpm. Im just too stubborn to realize i prob have too much tq for a fwd car to ever make my car fast. lol. But as long as you can get tq to the ground and keep the high hp your car will be faster.
01-02-2014 01:04 PM
focusmaniaczx3 could you give more details on this boost by gear? if i could set my boost up in each gear to the point just before it rips the tires off the ground that would be killer. right now i only have low and high boost options on the fly
12-30-2013 04:40 PM
02_z_x_3 Hmm when I get closer to the car running I'll have to set it up this way.
12-30-2013 03:28 PM
Fast Tuner
Quote:
Originally Posted by 02_z_x_3 View Post
Fernando, how did you set up the boost by gear? I have as well and would like to do that but I always heard you had to have the micro switches
I'm using the clutch NO micro switches and it does work awesome !
12-30-2013 02:56 PM
02_z_x_3 Fernando, how did you set up the boost by gear? I have as well and would like to do that but I always heard you had to have the micro switches
12-30-2013 02:05 PM
Fast Tuner
Quote:
Originally Posted by focusmaniaczx3 View Post
do you think the issue with shifting from 1st to 2nd would still present itself if you launch on low boost (300ishwhp/tq) and switch to high boost (400+whp/tq) in 2nd or 3rd?

i also dont understand why it is completely necessary to put a custom IM on the car to shift the powerband up into a higher rpm range. it also reduces tq, it increases hp as well, but ive always been taught that torque is going to make you move more than hp. im always more than ready to be told im wrong so long as you can make a logical explanation as to why lol. i understand as well that supposedly after a certain psi you run the risk of busting the stock IM. i guess thats a risk im going to take for now but i personally know a guy that has been running just shy of 500ft/lbs/tq to the wheels for several years now on a stock im with no damage to the intake.
The car has a Eboost 2 and I do boost by gear the car is launch will spring pressure but it will still make over 400 wheel so is hard.

About the intake isn't mandatory but it is suggested, just think about the airflow on the OEM vs Custom.
12-29-2013 12:11 AM
focusmaniaczx3 do you think the issue with shifting from 1st to 2nd would still present itself if you launch on low boost (300ishwhp/tq) and switch to high boost (400+whp/tq) in 2nd or 3rd?

i also dont understand why it is completely necessary to put a custom IM on the car to shift the powerband up into a higher rpm range. it also reduces tq, it increases hp as well, but ive always been taught that torque is going to make you move more than hp. im always more than ready to be told im wrong so long as you can make a logical explanation as to why lol. i understand as well that supposedly after a certain psi you run the risk of busting the stock IM. i guess thats a risk im going to take for now but i personally know a guy that has been running just shy of 500ft/lbs/tq to the wheels for several years now on a stock im with no damage to the intake.
12-26-2013 02:03 PM
Fast Tuner
Quote:
Originally Posted by ZXthrizzle05 View Post
He runs Jim's intake
It's not a Jim intake ;)

You can see some pics of it in a very old post the car is on the same set-up

http://www.focusfanatics.com/forum/showthread.php?t=240986
12-26-2013 02:02 PM
Fast Tuner
Quote:
Originally Posted by focusmaniaczx3 View Post
those are some impressive numbers for a cm4 to hold! mind if i ask what intake manifold you are running? im planning to run a very similar setup and might end up with similar power. cm4, 16x8 wheel for slicks, LOTS of boost. right now im on the stock intake manifold. i think my torque is going to be really high because of that.

and what modification did you make to the oil pump? inquiring minds want to know! for the time being though i shouldnt need it as im setting it up to make peak power before 7500rpm. do you have problems shifting gears at or before that rpm? and are you running the 4 puck or 6 puck?
Is a custom RPS intake with a 65mm TB nothing fancy is short runners without velocity stacks. If you plan to do over 25psi you should look into a custom intake ;)

As far as the pump is a port and polish job with the OEM crank pulley the shifting problems will depend on the power you make at 450-480ish I can shift just fine but anything over that won't go into 2nd gear at high RPM's 3rd and 4th seem to be easier. I do use a CM 4 4puck !
12-26-2013 01:57 PM
Fast Tuner
Quote:
Originally Posted by 1turbofocus View Post

Congratulations looked like a fun run !

Tom
Thank you sir, and yeah the top end is sick !
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