I need help!!!!!

[VXS2SLOW]

Hello there

I recently bought a vx s pac manual thinking it would have to be quicker the my old auto vn. You can imagine my surprise when i discovered this was not the case. It goes like a dog. I installed a full exhaust system and made little difference. Where do i go from here? I've been told a larger throttle body and a performance chip or ecu reprogram would be a good idea, but before i spend any more money i thought i'd check with others who'd been in my situation before. Any help would be greatly appriciated as i know very little about engines. Also i'm desperate to beat these damn r33 skylines at the runs!

Thanks guys

[levymetal]

Hello there

I recently bought a vx s pac manual thinking it would have to be quicker the my old auto vn. You can imagine my surprise when i discovered this was not the case. It goes like a dog. I installed a full exhaust system and made little difference. Where do i go from here? I've been told a larger throttle body and a performance chip or ecu reprogram would be a good idea, but before i spend any more money i thought i'd check with others who'd been in my situation before. Any help would be greatly appriciated as i know very little about engines. Also i'm desperate to beat these damn r33 skylines at the runs!

Thanks guys

probably the wrong section, and if you want your car to beat a gts-t then go to sleep and dream about it. there's no way you'll ever do it with a na ecotec. unless of course you want to spend 10k!

[Ozzie]

chunky cam, bigger valves, extractors, cai, chip, diff gears... the list goes on.

i know what you mean though, i had a VN before the VT and the VN had 50X the power of the VT. But it was mildly worked compared to the VT.

[vnv8driver]

clean out your throttle body and i.a.c, do a full service then do a comparisson, the vx is quicker overall versus the vn, but the vn will get it off the mark because its less refined and lighter.

[Ozzie]

clean out your throttle body and i.a.c, do a full service then do a comparisson, the vx is quicker overall versus the vn, but the vn will get it off the mark because its less refined and lighter.

when you say clean the throttle body, do you mean the whole intake manifold? asin take it off to clean?

[VT SERIES II]

I have owned a VN and a vt and I must say.....The VT ****s all over the VN…there’s no way the VN could beat it (In my own experience). If this is a new car there could be 1 million reasons why this is occurring, get it looked over by a professional. .. maybe they can shed some light on the situation

[vy_storm]

Thread moved.

Please check for the correct section in the future! Posts may be deleted without warning!

[VryNeat]

Hello there

I recently bought a vx s pac manual thinking it would have to be quicker the my old auto vn. You can imagine my surprise when i discovered this was not the case. It goes like a dog. I installed a full exhaust system and made little difference. Where do i go from here? I've been told a larger throttle body and a performance chip or ecu reprogram would be a good idea, but before i spend any more money i thought i'd check with others who'd been in my situation before. Any help would be greatly appriciated as i know very little about engines. Also i'm desperate to beat these damn r33 skylines at the runs!

Thanks guys

only way ur gonna beat a skyline whilst stock...... is go off and buy a skyline

[acarmody]

What's wrong with this car that it is slower than a VN? Was the VN a V8?
Bigger Throttle Body isn't going to get you anywhere, try some YT Roller Rockers and then a tune, shuould make a difference.

-Adrian

[Jesterarts]

Something is wrong with that car if its slower than a vn if it was a buick v6.

Get is serviced!! lol

Other than that... your mod list should look something like this:

- CAI
- Full exhaust
- YT 1.95:1 RR
- A bigger TB will help responsiveness about this point
- 3.73 Diff gears
- Replace clutch with something grippier and the POS dual mass flywheel with a solid and lightened one.

That's what I did to my old s-pac and my best 0-100 was about 6.85sec with a 14.8ish quarter.

Caused a few upsets back in its day...

[Holdens Rule]

if you go by holdens specs when the cars are released then you will find that the vn and vp are a bit faster than the newer commodores with the vp being the fastest in the na sixes. VNs will always go a lot harder than a VT when talking stock motors but the ecotec is a much more refined and smoother motor.

[phat01]

The problem with a VX is that the computure cannot cope with change.It ranges up and down the lean to rich scale trying to find a balance point and the more you change it the harder it tries and fails to keep up. The computure cannot be swaped or rechiped but Rob from mencals can remap it to cope with most changes.

[ozengines]

when you take off the inlet manifold etc you will get a fright as to how much crap is in there affecting air flow etc.

[danja]

when you say clean the throttle body, do you mean the whole intake manifold? asin take it off to clean?

when you take off the inlet manifold etc you will get a fright as to how much crap is in there affecting air flow etc.

I've done this. It's a complete waste of time and effort (and money for all the gaskets etc you'll need to replace and other sundries. Do the TB, simply so it doesn't stick as much, the plenum you can leave well alone. There is a lot of crap in there, but it's not doing any harm.

[jjFarking]

OK, I'm a newbie with most of the terminology used here, but wtf is a TB?
In regards to the CAI, is a K&N filter really worth getting, or is the 'second hole' option a better way to go?

[Robbo_c]

OK, I'm a newbie with most of the terminology used here, but wtf is a TB?
In regards to the CAI, is a K&N filter really worth getting, or is the 'second hole' option a better way to go?

TB=Throttle Body
With the CAI do both.

[sealy_au]

its a vx, its an s pac, from my experience working for repco and working on my own vt 5 speed, i would replace the oxygen sensors as they only last for around 80 thousand km and get some "aznew" exchange injectors,

injectors are easy to do but require to pull the plenum chamber off mask off holes to avoid droping any bolts down the manifold or u will be there for hours like i was fishing with a magnet provided all goes smoothly should only take about an hour or 2 to do, take care not to damage rubber ring gaskets as u can usually just reuse them.

clean/replace air cleaner element, remove maf sensor hold sensor block to the top and spray with carb/maf sensor cleaner, allow to completely dry before refitting

also with air intake disconnected bring engine up to running temp shut off open the throttle butterfly and spray around half a can of carb cleaner in(do this before replacing oxy sensors) let it sit for 5-10 mins start engine and run at around 1500 rmp for around 60-90 seconds then open throttle to around 3500rmp and spray in another decent chunk of carb cleaner, another little trick iv heard of is bring the revs up to 3.5 or 4 thou and get an i dropper with valve lube in it and let half a dozen drops be sucked into the engine,

if none of that improves performance get the exhorts back pressure checked as its not uncommon for the DFI module (part of the ignition system) to fail and the car drops 2 cylinders but still runs unburnt fuel reignites in the cat and melts it highly restricting flow

thats my 2 cents

EDIT:::: remember everyone high flow air filters only really make a big difference if your revving the crap out of the car, since factory tunes make power around 3.5thou they dont really do that much, be careful not to over oil otherwise they **** mafs, a good way to go is the new LUKEY PROFORMANCE air filters made by WALKER there basicly plastic dont need oil jsut need hoseing out now n then