What's The Best Value For Money Upgrade To Do Next?

[60dzl]

Got my R32 GTR's ecu upgraded to a Vipec recently. With Turbo-back exhaust and R34 turbos and HKS EVC boost controller set to 14 psi, it's making 205 atw kw. I would eventually like it to make around the 250 atw kw.

My question is what's the most cost effective upgrade to do next?

My mechanic suggested to upgrade the fuel system and a re-tune after that. Other are saying cams and more boost.

Any suggetions?

[The Mafia]

get a new mechanic.

Fuel system is good for over 250rwkw. Maybe change your fuel pump to a newer one

Cams are not needed for a while yet....

Just up the boost and get it re-tuned. Check for any restrictions too. (exhaust etc)

[wolverine]

being a tax payer how about using the money to lobby the govt to spend our money on infrastructure so the nation has an asset rather than a larger current account deficit OR more tuning?

[PM-R33]

Get some adjustable cam gears, Bosch fuel pump and retune it with more boost. Simple as that.

[R.3.2.G.T.R]

adj cam gears for sure.. wot cat u got?? 205kw is bit low running 14psi esp r34 bb turbo's.. i was getting 230kw on 13psi.. stock turbo's full zorst with hi-flow cat + adj cam gears

[Tomek]

Standard system doesn't start running dry till 280+

Yours should be making EASY 240 with a proper tune, mine made 240 with just fc, pods, cat-back and a bar of boost.

[R32 Driver]

fuel pump if yours is dieing

bigger turbos + cam gears

sell the 34 turbos and get a pair of -5 or -7s?

[tridentt150v]

being a tax payer how about using the money to lobby the govt to spend our money on infrastructure so the nation has an asset rather than a larger current account deficit OR more tuning?

That worked....................lol

[clip14]

sounds like something is wrong there.

is your engine healthy?

do you have an air fuel plot of that dyno run?

[blind_elk]

How about some up-rated suspension (sway bars in particular) so the car handles with the increased power?

[shotter]

How much increase in power can you get with adj cam gears? And how hard is it to adjust?

[PM-R33]

On the RB26's they are a good investment on stock cams, only downside its a lot of dyno time and mucking around.

[shotter]

an hour of dyno time? or a few hours?

[Swiper the Fox]

an hour of dyno time? or a few hours?

8 deg retard on exhaust and 4 deg advance on inlet generally works best on stock cams.

these figures are crank degrees so 4 and 2 on the cam wheels.

id buy a Techedge wideband and have it hooked up to the Vi-PEC. With the autotune function enabled it will constantly analyze and alter the tune for optimum results. Or if you want a dash style interface similar to a power fc handcontroller for the Vi-PEC a EM PRO II engine monitor would be a wise investment.

Edited February 25, 2009 by DiRTgarage

[shotter]

Woudl those figures change if the base timing is changed? And im guessing you should make those changes on a dyno to make sure it's doing the right stuff?

[R33GOD]

wow. is this stimulus package going ahead is it? I thought they scrapped it.

if not...... im gonna get my injectors and tune done. woo hoo

[TiTAN]

8 deg retard on exhaust and 4 deg advance on inlet generally works best on stock cams.

these figures are crank degrees so 4 and 2 on the cam wheels.

id buy a Techedge wideband and have it hooked up to the Vi-PEC. With the autotune function enabled it will constantly analyze and alter the tune for optimum results. Or if you want a dash style interface similar to a power fc handcontroller for the Vi-PEC a EM PRO II engine monitor would be a wise investment.

leave it to the wideband O2 control. the autotune doesn't alter the fuel map properly when the cells are changing as rapidly as they do driving around town. (i have tried it and it messes the map up)

[Swiper the Fox]

leave it to the wideband O2 control. the autotune doesn't alter the fuel map properly when the cells are changing as rapidly as they do driving around town. (i have tried it and it messes the map up)

ok sweet. good investment though...i love mine

[PM-R33]

wow. is this stimulus package going ahead is it? I thought they scrapped it.

As far as i am aware it is, god i hope so, i allready have plans for the money haha

[sneki81]

As far as i am aware it is, god i hope so, i allready have plans for the money haha

yep definetly is. money will start being deposited in april unless you didnt do your tax return last year or the year before (cant remember which year they are going off). will be getting deposited straight into the account that you used aswell.