Hi

I saw Jak run his car at Eastern Creek on Sunday. He had some tyre issues but the car ran sweet up until I had to leave to go to work.

Its so quiet and the whole build up is a credit to him.

In Jaks group was a stock WRX, after on run it came in with a big end knock, poor guy. Jak said to him "what do you rev it too?" he said 7,000 rpm, Jaks reply was I only take mine to 5,500, the WRX guy said I had to rev it 7 to keep up with you. On the track the WRX would get onto Jaks tail around corners and under brakes, on the straights Jak just walked away from the WRX, all on 7 psi boost.

Steve

Hasta la Vista baby. Go jak go....

Coming down the straight to turn one you'd think he'd run out of fuel and was coasting. The thing was so quiet!

I'm going to go to Jak's place and confiscate his tyres.

CYA CT

Yep, sounded like a jet engine whistle. great sound, and very unique.

i har jaks has gone to a wrx motor, is that right? the ppl from the euro day r still talking about his exit from the show, awesome...

Yep, WRX

yes it was very quiet. Sounded like a jet engine with that whistle from the turbo

Yeh made the trip down from valla and pic up Peter Korsche to see how jakos going well done jako just a little quiet for me but it keeps the dark side pumping and with slicks on the car should be a lot quicker.JVLRacing

Mine is off to SAS for 2 days of dyno tuning, next week. (finally)When I told the guy Jak was still on his start up maps...he did not believe me...he said there are 2 cars out there..the one he is in and the one after its been on a dyno...and they are nothing alike.

And I didnt think that smile could get any bigger..well it will, so watch out kids!

Matt

Matt, What sought of dyno figs do you think you will get? These different dynos are giving out different stats.There was a dyno test day using a BA XR8 and gave 3 different readings these results were in the mag called Performance Buildups something to think about.Ive said to jako a few times i believe engine dynos are the better way to go.A direct hp fig. to a motor gearbox in a dub is nearly spot on from engine dyno some people think we lose 10%+.My figs of the eng dyno made 300hp+detuned.Have fun keep the dark side realJVLRacing

I've had two recent dyno runs (excluding the CBB run) and have had very similar results.
C&V performance and Heltech, both Dyno Dynamics and both within 1.5 RWHP of each other.
As a tuning aid the chassis dyno is fantastic, but other than that...well

But you still had different readings,these readings were done on Dyno Dynamics,Dynamic test systems rig and a Dynlog.JVLRacing

I have never really thought about the figures that the motor would put out.....just that it would be alot faster than any i had owned before. The turbo it has makes power hard from really low revvs to about 6k (used in group N rally wrx's) and with the power up pipe, filter and microtech, I figured the power would be pretty good...flat torque curve also.

It will be ready on Monday, it has had the cold start tuned in and they fixed the map sensor problem..all is left is a short to the intercooler fans...once they can operate, its on the dyno for 2-4 hours. From what I have seen and heard the guys are freaks when it comes to aftermarket injection and forced induction.

There should be my dyno chart on here by tuesday...thats if I can get out of the car to post them.

Matt

Sounds good Matt heard alot from Jako enjoy have fun this will scare you.YEH HA!.JVLRacing

how did it all go ??

Vwcool that is correct about the dynos,so which of them do we use?There was more then a couple of kw% difference check out mag called Performance Build up and go to the soap box section .I disagree with you about the transfer hp to the wheels there less moving parts between vw compare to a front engine car transfer to rear. with moving parts.When i talk of detune eg. japan subie spec motors to Aust subie spec motors they are not tuned with same hps figs. even the yanks have more kws .when sold to our shores .Just bought a XR8 BA Falcon and they not tune to there potenial but the tune they use is to make the motor last.eg Police Xr8s boost ther kws by tuning the computer (not using a different chip or computer)for us to do this cost us 2k this was in a mag called Motor.I will find the specs on the subies and get back to you.JVLRacing

[Edited on 18/4/2005 by gayanne]

Quote:

Originally posted by gayanne Vwcool that is correct about the dynos,so which of them do we use?There was more then a couple of kw% difference check out mag called Performance Build up and go to the soap box section .I disagree with you about the transfer hp to the wheels there less moving parts between vw compare to a front engine car transfer to rear. with moving parts.When i talk of detune eg. japan subie spec motors to Aust subie spec motors they are not tuned with same hps figs. even the yanks have more kws .when sold to our shores .Just bought a XR8 BA Falcon and they not tune to there potenial but the tune they use is to make the motor last.eg Police Xr8s boost ther kws by tuning the computer (not using a different chip or computer)for us to do this cost us 2k this was in a mag called Motor.I will find the specs on the subies and get back to you.JVLRacing [Edited on 18/4/2005 by gayanne]

Well.......The dyno tune is not yet complete. Due to an inability to get a proper set of weather pack connectors for the computer when I rewired the loom two days before it went to SAS, it subsequently was experiencing a miss???? under load. Rather than charge me $600 to replace all the plugs and terminals they suggested I do it and bring it back. I drove it home and have redone all the required and will be put back in today. Problem was identified and fixed.

Ran the whole way on 2 cylinders- still put it off the clock in 3rd down the street....ball bearing turbo spooling up is pretty noisy, combined with the thermos on the intercooler..it sound like a hover craft with a huge air leak.

Like I said earlier, I had never dwelled too much over HP figures, although I asked the guy when mine was on the dyno(when they identified the miss), he said that a wrx with the same mods makes about 165kw at the wheels. As mine has only 2 driving wheels not 4, and no power steering etc the figure he said he should get is about 200kw at the wheels....then smiled and said "lucky you are as big as you are, to help keep the front wheels down, you will probably need a passenger too!"

It will go back, to enable all aspects of tunability to be opened and adjusted through entire rev range, decelleration etc. It will then be taken out on the track/street and fine tuned. Problem.... DOES ANYONE HAVE A GAS ANALYSER WE CAN USE TO STREET TUNE????

lol... I'll be the passenger! I was overlooking 2WD vs 4WD and yes there aren't many 2WD WRX-powered Dubbies with stock management system to compare power to. Yours is standard management?

[Edited on 18/4/2005 by VWCOOL]

So we agree on the dynos no probs.:duhso your telling us a front mounted motor same hp figs (vw eg)transfer its hps down a tail shaft to the rear diff section area is going to be the same as a vw configuration lost of power %wise (stated by you vwcool)! and read the book Motor it might give you insight on the xr8 i have a friend that works with these xr8 patrols and he has confirmed this as well.:PJVLRacing

Wow, I'm only new to posting here, and whilst this is quite interesting, I cannot help it, but I must say I don't know who gayanne is, but it is extremely difficult to understand what the hell he/she is saying because all the words run together and make no sense.

Can you try and format what you are writing please? No disrespect intended, cause I'd like to hear what you have to say, but reading this is giving me a headache...

Gayanne, Craig raced his car for a decade - that's 10 years - without even knowing what power output it had because it didn't go near a dyno. A dyno is tuning tool... you can claim and discuss all you want about de-tuning :duh but why de-tune the car and then have to set it up again when the 'proper' tune goes in? WOFTAM, I reckon...

When it comes to racing/competition, it's the results on the track that count. Craig has class records for his competition...

For months I have watched this forum, people offering advice and engaging in arguments both serious and humerous. I have usually bit my tongue when people corrupt discussion with argumentative, onesided and often untrue comments on threads they have no relevance, knowledge or constructive input. This is not healthy for the life of the forum or our individual persuits, relating to vw's and other topics discussed.

VWCOOL. "i am right and you are not" please tell me this was said in gest. If it wasn't then you may be alot of things, although right is not one of them. If the diff isnt in the box thats bolted to the motor, then there is more loss.

As for dynos being crap for high performance tuning,this is possibly the most naive, incorrect statement I have seen you post. Yes the track is the best for fine tuning, although if you knew anything about aftermarket ecu function and tuning, you would realise the limitations of sitting in a car with a laptop with a portable o2 sensor, trying to replicate all aspects of speed, revs, boost, load, timing and all the other variables that can be instantly looked at on the dyno. The radiator comment was another treat. There is a huge fan in front of all dynos, despite the fact that cars have thermo fans on their own the regulate operating temps. Cars do not overheat on dynos, and if they do get a bit hot due to the load and revs of the car then, it can be tuned for that too! They were not designed as a HP wank tool, so who cares if they all vary slightly in figures as long as the car has been put through aspects of performance and tuning not available by any other means. I am not going to start on the diagnostic capabilities, as my head is hurting.

As an example, this thread was hapily plodding along, until you decided to chime in with opinions not aimed at the benefit or assistance to anyone. Its your right to say whatever you want, I just wish you could loose that chip off your shoulder as your knowledge can obviously assist those newer to the scene.

Sorry for the ramble guys....

[Edited on 19/4/2005 by vwtool]

And isnt this about seeing Jaks car run??? Also Craigs car has carby's, so apart from changing jets and timing, then the only thing a dyno will do is print you a hp figure.

I have a laptop with an AFM program on it. The hardware is an O2 sensor and a "black box" that then runs real time to the laptop. Gives you a nice pretty graph which can be downoaded.:thumb
I haven't used it for years but I'll dig it out.