ECOTEC V6 kits VS - VY

[psivyv6]

ok sounds good will get back to you, ill email you for a price but il get on to the valve first!!!

[dj_simmo]

hi, im looking at doing up my 99 vt ecotec i want mor speed power and quick off the mark and not sure wat mods i can start with. so are u able to help me and give me a list of mods i can do?

cheers

[psivyv6]

i would start with a good exhaust system all the way through
a set of high ratio rockers and a cold air intake of some sort that should make a nice difference

[vs-6]

1. i didnt see the need to adjust the idler it seems tight enough
2. may look into this havent cleaned it its just been overlooked i actually have a kn filter cleaner kit in my shed.
3.the air filter may well be slipped on a bit far as it was fouling on the quater panel so i moved it up a bit i think.
4. yer theres a few bits it like to fix with my piping which may be restricting it.
5. doesnt seem to be any leaks at all
6-
7.i actually just remembered that i have another boost guage shall give it a look
8. yer ill be definatly trying to fix it before ordering another pulley

i may also try and get a 4' pipe made up not sure how im gonna fit it in but im sure theres a way.
and yer hopefully this has been a problem from start that i will be abe to fix and have free kw's and get some better times.

cheers for ur help once again

i have narrowed it down to 2 possible causes which are
1. tight bends and a harsh kink
2. boost guage
will be having a look at boost guage 2moro ill let you know how i go

[psivyv6]

hey just wondering if i have to have chiptorque retune my ute? i wanted to get in finelt tuned since i want to put a 12psi pulley and i hav a big exhaust and rockrs and the cooler can anybody do it or just chiptorque? does any1 no an approx price?

[vs-6]

think ur gonna be looking at around the 900 mark for price wise and yer there are alot of places that do it but i think ur better off looking for some1 thats done a v6 centrifical supercharger before.
and they also need to have kalmaker software
there should be alot of places that can do it

[psivyv6]

oh ok then cheers ill hav a ring about

[Raptorsc]

Ring Leah at chiptorque (07 5596 4204) and tell her you already have a Raptor kit, she should have your name and tune on file anyway.

Then tell her you want a little remap with some extra fuel added in, ask what that costs, I think it will be a LOT less than $900 as all the modification to the ECU was done the first time.

Can only be done by CT but there is no reason not to since they are good with these things and can burn the special chip for the job.

[dj_simmo]

thanks but i have done the exhaust and cold air intake i was looking at doing internal mods like cams pistons and shit like that can u point me in the rite directions or can u guys do kits for that sort of thing?

cheers

[vs-6]

are the vy's differnt to the vs's then tim??

[Raptor Charged VX]

vs-6 yes from VX on the use a flash type tune, u cant actually change over a memcal like in the older computers, so if you need to do anything to your computer you need to take it to CT they then remove your computer and retune it to what ever you need done, a lil bit more of a hassle but alot better in the way of the self learning abilities as aposed to the older models

[Raptorsc]

Brad

Yes that is correct, the VU VX and VY are VASTLY different to VS - VT.

Brad - next paragraph is specially for you

Chasing lower than usual boost, I am going to make a statement that is based on a "feeling/hunch" that I have about your boost pressure loss. This statement may be worthless but it also may not be, I have considered some things I have been watching for a while.

I am saying ---------- wait for it ------ minimise the use of silicone BENDS in your intercooling system, eliminate them if possible, I think (HUNCH) you might find your boost loss may disappear. Its up to you to try it.

If you do this I am very keen to know the result. Just use silicone to connect to intercooler, throttle body etc but do not use it for bends. NO SILICONE BENDS

[psivyv6]

hey iv got a a few sharp silicone bends on my setup and mine is showing 10psi still with stock pulley and intercooled

[vs-6]

haha good to hear tim i shall let you know that i spent all day fixing my intercooler piping shall get pics soon i have reduced the # of silicon bends to 2, one into throttle body which i cant really get rid off and the one coming out of the supercharger only way to get rid off it is to spin the charger assembly but yer i think this will be promising i had a few bit of piping that were just dodgey.
i shall let you know im taking it for a spin later

[Tsunamix]

I don't think silicone bends will do it, silicone bends are fibre/fabric reinforced so any "swell' under pressure will be minimal.

Maybe start with the obvious - check belt tension. Look for losses at joins (dose with soapy water on the outside - kitchen detergents rock for that), pressure losses will blow bubbles.

Ditto seals on manifolds / plenum upper and lower.

Good luck

[immortality]

I don't think silicone bends will do it, silicone bends are fibre/fabric reinforced so any "swell' under pressure will be minimal.

i think you missed the point, have a look at a 90degree bend in silicone and compare to a alloy bend. yuo'll note that the silicone bend is a very tight and abrupt turn, the alloy pipe is a lot more progressive.

i think what tim is trying to say without been blunt is that sudden changes in airflow direction (i.e. very tight bends) will cause airflow issues. commonly seen as a pressure loss in FI setups

[Raptorsc]

i think you missed the point, have a look at a 90degree bend in silicone and compare to a alloy bend. yuo'll note that the silicone bend is a very tight and abrupt turn, the alloy pipe is a lot more progressive.

i think what tim is trying to say without been blunt is that sudden changes in airflow direction (i.e. very tight bends) will cause airflow issues. commonly seen as a pressure loss in FI setups

Immortality - you got it in one.

Not worried about swelling etc, the inside radius on a lot of this stuff is very tight and air just doesn't go around it well at all.

[vs-6]

yer and lets just put it this way after spending the day on fixing my intercooler piping i am now reading 11psi so looks like it was all in the piping as i said tim i still have 2 silicon bends but the throttle body one is nearly impossible to get rid of.
i got alot of pipe welded i have pics
but i still have a few silicon joiners but where i have used silicon joiners i have made sure the pipe meets flush it was just too hard to get all pipe around bits so silicon joiners were best to use. took me all day but the massive increase in boost i love it best launch ive ever had
exhuast and good intercooler piping have made the biggest increase in power cant wait to get her on the track and the dyno for a tune.

[Raptorsc]

Brad

You have my respect - absolutely, it was a hunch that I came to after MUCH thinking about your system and a couple of others.

I ask everyone to seriously consider what Brad has achieved, getting rid of the other 2 would help maybe 1psi more but I wouldn't get hung up on it.

Well done, can I send you a Raptor Supercharger's sticker mate - you DESERVE it. You have made the effort to find the problem and in doing so saved me the same task.

PM me your address ------ again Please


SILICONE BENDS KILL INTERCOOLER SYSTEM PERFORMANCE - PROVEN

Using a couple is ok (as in a genuine Raptor system) but anymore and its all down hill for boost

[Raptor Charged VX]

if possible no silicon bends at all, i only have approx 3-4 inch long bits of silcone joining butted pipes together and to the cooler and TB, didnt loose ne boost from cooling

[Raptorsc]

RC VX

When I weighed up many things in this consideration your install was one of my references as was a local vehicle here in Mackay.

[psivyv6]

iv used majority of silicone with 2 pretty sharp 90's and a 45 my boost gauge still showing 10psi, i only really used silicone tho coz i like the blue bits.

[Raptorsc]

Nic

I just reviewed your install pic and its better than you think, you have avoided the really bad bends, like straight off the blower you have a metal bend, you have butt joins elsewhere, you do have a 90degree into the TB and maybe some at the bottom, its a LOT better than what it could have been and your results show that.

[psivyv6]

ohh ok i see, in my oppinion i would advise for people to use the reverse plenum chamber aswell it reduces a fair bit of piping length which may result in pressure loss and less likely for leaks and stops the piping from running behind the radiator collecting heat as it travels through

[Tsunamix]

I am honestly suprised.

technically speaking, assuming flow is a constant, anything that reduces the pipe diameter will INCREASE pressure. This a law of physics.

Admittedly, if your seeing less flow, AND the pressure is the same or less, that would make sense.

If you are putting out 10PSI at the 'charger, the only way for it to be reading LESS pressure at the plenum, is if the volume of the piping increases. If your bends were preventing the charger from putting out a full 10 PSI I guess that would make sense.

If your talking about the difference about 'mandrel' bends (where the ID is constant all the way through) and 'Press' bends (where the ID narrows to accommodate pipe stretch), then that law applies everywhere, silicone, steel plastic, whatever.

By the way - Mandrel bends thin out the wall thickness of your pipes