supercharged xr8

capa xr8 · 22-03-2006, 10:36 PM

have just fitted a stage 2 vortech to my ba xr8, going for a custom tune on monday can anyone give me some insight as to what injectors to use and should i change the 8 psi pulley to a 10 any other info on how to set it up for max hp would be appreciated.

X ORSMXR · 22-03-2006, 10:40 PM

What area are you in dude

capa xr8 · 22-03-2006, 10:41 PM

dalby qld bout 2 hours west of brisbane

Aeron · 22-03-2006, 10:46 PM

Quote:

Originally Posted by capa xr8

dalby qld bout 2 hours west of brisbane

Well, with the SC that'll be 15 mins west of Brisbane

X ORSMXR · 22-03-2006, 10:45 PM

l would let the tuner decide on what injectors to use and also what pulley as well....

capa xr8 · 22-03-2006, 10:58 PM

Quote:

Originally Posted by ORSMXR

l would let the tuner decide on what injectors to use and also what pulley as well....

i just wanted some idea so i wasnt going there without a clue wouldnt like to be led up the wrong path

XRQTOR · 22-03-2006, 11:03 PM

Quote:

Originally Posted by capa xr8

i just wanted some idea so i wasnt going there without a clue wouldnt like to be led up the wrong path

How much power do you want to make, are you planning on adding a cooler down the track or not. The harder you spin that little v2 the hotter the air intake temps will be.

capa xr8 · 22-03-2006, 11:11 PM

Quote:

Originally Posted by XRQTOR

How much power do you want to make, are you planning on adding a cooler down the track or not. The harder you spin that little v2 the hotter the air intake temps will be.

thought around 450 hp at the tyres would be nice if possible,

XRQTOR · 22-03-2006, 11:24 PM

Quote:

Originally Posted by capa xr8

thought around 450 hp at the tyres would be nice if possible,

I have a baby (Rich as hell) tune in my car atm and it's running around 34orwkw @9lb's. I think you won't have a problem with making the power but retaining that figure once heat soak sets in will be the big issue. Once they get hot they drop power, i know a guy who ran a non intercooled kit on his car and he said that was it's biggest downfall.

Any other mods on the car???.

XRQTOR · 22-03-2006, 11:00 PM

I have a stage 3 kit fitted to my xr8 with an extrenal pump and bigger injector's, don't ask what size tho.

Leave the 8lb pulley on esp if it's not cooled, are you running the water injection kit.

capa xr8 · 22-03-2006, 11:07 PM

Quote:

Originally Posted by XRQTOR

I have a stage 3 kit fitted to my xr8 with an extrenal pump and bigger injector's, don't ask what size tho.

Leave the 8lb pulley on esp if it's not cooled, are you running the water injection kit.

yes to water injection,done some research on water injection everything i read says to inject between the s/c and throttle body mine goes in before s/c what your thoughts

XRQTOR · 22-03-2006, 11:16 PM

Quote:

Originally Posted by capa xr8

yes to water injection,done some research on water injection everything i read says to inject between the s/c and throttle body mine goes in before s/c what your thoughts

Hmmm i can't think of any reasons why it shouldn't be done that way although im sure there is a reason why they inject it after the blower. This is my first blown car so im still fairly new myself.

I would inject the water after the blower, going throught the blower itself it'd turn to vapour to quickly as the blower gets really hot. Coming in after will have a much better chance at cooling the air.

capa xr8 · 22-03-2006, 11:23 PM

Quote:

Originally Posted by XRQTOR

Hmmm i can't think of any reasons why it shouldn't be done that way although im sure there is a reason why they inject it after the blower. This is my first blown car so im still fairly new myself.

I would inject the water after the blower, going throught the blower itself it'd turn to vapour to quickly as the blower gets really hot. Coming in after will have a much better chance at cooling the air.

that would be what i would think to,have you heard of using 50/50 water methanol for better cooling

XRQTOR · 22-03-2006, 11:33 PM

Quote:

Originally Posted by capa xr8

that would be what i would think to,have you heard of using 50/50 water methanol for better cooling

Who installed the kit and why was the injection put infront of the blower, it couldn't be that hard to plumb the feed line and injector into the intake after the blower.

Yes i have and thats what it's supposed to do, im trying to find more info on it myself as im intrested in injecting pure meth on my race tune to keep the engine alive till i get aq built engine in.

jabba · 22-03-2006, 11:10 PM

Quote:

Originally Posted by capa xr8

have just fitted a stage 2 vortech to my ba xr8, going for a custom tune on monday can anyone give me some insight as to what injectors to use and should i change the 8 psi pulley to a 10 any other info on how to set it up for max hp would be appreciated.

max power: 10 psi pulley with 42 pound injectors and extra fuel pump.....

BLKFPV · 23-03-2006, 12:25 AM

Quote:

Originally Posted by jabba

max power: 10 psi pulley with 42 pound injectors and extra fuel pump.....

and an intercooler

in full tune, a 4.6L Cobra we fitted a Vortech to was making 380rwkw ... de-tuned to about 330rwkw until we edit it (soon

: )

at 10psi don't be tempted to raise the rev limit ... open the motor up first and strengthen and then go to 6500 with some confidence

pks54 · 22-03-2006, 11:50 PM

Quote:

Originally Posted by capa xr8

have just fitted a stage 2 vortech to my ba xr8, going for a custom tune on monday can anyone give me some insight as to what injectors to use and should i change the 8 psi pulley to a 10 any other info on how to set it up for max hp would be appreciated.

Hi capa xr8,
Sounds like you did this all yourself. What trouble, or should I say how hard is it to install. This next question might also sound stupid... but it also soounds like the motor is running at the present without ECU edit. Is this correct?

capa xr8 · 23-03-2006, 12:04 AM

Quote:

Originally Posted by pks54

Hi capa xr8,
Sounds like you did this all yourself. What trouble, or should I say how hard is it to install. This next question might also sound stupid... but it also soounds like the motor is running at the present without ECU edit. Is this correct?

not to difficult if you are mechanicaly minded,layed it out fri night checked to see if everything was there had it running by bout 6 saturday,yes is running without edit no problems.

pks54 · 23-03-2006, 12:17 AM

thanx capaxr8.
dont know what path to take yet. im thinking of the cheaper powerdyne unit as im not after that many horses. Not a Mechanic, however many years ago have stripped cars and motors to bits and reassemble them. However im very lazy these days and don't want to tackle a big job, but by the sound of things you put it together pretty quickly. Im suprised that it will still run on stock tune, obviously a tune will be mandatory.

XRQTOR · 22-03-2006, 11:56 PM

Just got told my injectors are

Bosch Green Tops
0280150558
42lbs/hr