Life After Vipec

[Turbo Dave]

I got my R33 Auto tuned with specs below apart from the VG30 rear,

My Question is.. should I see more power once I put the Vipec on and retune?

My goal once fitted and tuned is 250rwkw(that would be around the 275-280 if it was manual so thats about all for a stock motor) and quicker spoolup and midrange.

Are these realistic expectations?

Dave

[R31Nismoid]

Realistically no. You wont make anymore power if the current tune is decent

[Turbo Dave]

Current tune is far from decent, but when I 1st got it done that was the figure it got.

I thought with a bigger rear housing and a bit more boost it would get a bit more!

[JonnoHR31]

what makes you say the current tune is far from decent? how much boost are you running?

[paulr33]

do you mean going from one ECU type to another?

then if thats your question, no as the ECU doesn't make power

the state of the tune, so going from a remap / PFC / HKS etc to Vipec wont make any difference in power

and if it does, your old ECU wasnt tuned properly

if you mean from stock ecu to Vipec then yes, youll make heaps more power (everywhere)

[Turbo Dave]

For some reason its gone out of tune, dunno why, Ive been told that the stock computer still has too much control and a standalone would get longer lasting results.

It now pings on high boost(15psi) and blows black smoke out the pipe most of the time, and is slowly getting worse, Have been running on low boost(10psi) for months now.

I realise the change of ECU wont give me a better HP figure but thought the bigger housing and a bit more boost on a standalone ECU with a good tune might do it.

Also.. always runs Vortex98 and was slowly getting worse even before changing the rear housing.

Edited April 5, 2009 by Turbo Dave

[silverr34gtt]

If you go for a stand alone ecu you will be better off.

I had a emanage ultimate in my r34 and it was bad to say the least.

[silverr34gtt]

Another question is what type of cat are you running?

i had an xforce on my car for 6 months before it failed and my car was knocking all over the place. Chinese = bad.

Im not sure if everyone will agree with me but id say you should get a good after market fuel pump at those power levels.

Edited April 5, 2009 by silverr34gtt

[Turbo Dave]

An invisible one...SHHHHH

Have been meaning to get one fitted, will have to get around to that.

Didn't realize it wasn't in my Sig, has a Tomei intake pump.

Edited April 5, 2009 by Turbo Dave

[Adriano]

I doubt you will get 250rwkw, as manuals only seem to get 250 unless they have cams, in which scaswe they get to about 265 with a highflow.

[Turbo Dave]

2 guys in Sydney that i know running the same hiflow but with stock housings are making 280rwkw@20psi on their RB25's.

If I can get somewhere around that I will be stoked.

If i dont get the result from the hiflow what would be the next stepup from the hiflow?

Something in the 300-350rwkw region but with minimal lagg so as not to suffer too much with the auto?

I plan on building a forged motor in the future to run a bit bigger setup but wanna max out what I have at the moment!

Edited April 5, 2009 by Turbo Dave

[TiTAN]

nothing in the 350kw range is going to have "minimal lag", the more power it can make the more lag there is.

[(OO)Firty Free(OO)]

Something in the 300-350rwkw region but with minimal lagg so as not to suffer too much with the auto?

HKS 3037 Pro S running E85 will do the job quite nicely.

Edited April 5, 2009 by RB25DETS2