my dyno result very strange

[Guest lixid]

:eek: OIC:rolleyes:

[meggala]

also the figures different dynos give can be different.

your guys dyno could be reading high thats why alot of the guys who came to the vic sdu dyno day said thier cars were making 180-190 rwkw on this dyno then they come to our dyno day and only make 140-150.

if the sydney guys have a dyno day then you can compare.

also the air /fuel ratios are important.

ask yourmechanic if he has a reading.

meggala

[Guest lixid]

ok

well is a/f ratio only can be read at dyno? or there is other way of doing it.

[meggala]

you just shove the gague in the exhaust pipe but most of the accuarte ones are on the dyno and the reading should have been taken when the car was tuned.

meggala

[Guest INASNT]

any dyno operator can have your reading 500kw@wheels if they wanted to! i think when u got your car dynoed the first time they bull****ted u man!!

especially with stock comp and rich a/f ratios its impossible!

A guy with a r33 brought his dyno chart to the last melbourne dyno day, after he got his unichip done saying 194kw@wheels. but when he got it dynoed at the day he got 155kw@wheels!

:uh-huh:

[meggala]

and you should have seen his a/f ratios on from the uni chip they were all over the place. rather than being an almost straight line.

meggala

[Guest lixid]

well

as i said i am happy with the car now, so for the question of "what the power exactly is?" is not really matter to me now.

the car run safely(reliable) is more important to me.

i would like to know my excat a/f ratio from my mach.

[turbomad]

Yes my so called Unichip tune wasn't actually that in tune was it, however he will be fixing it this Sat, and if he can't for some reason then I'll get my money back. So I might be back to check up on his work.

[Guest INASNT]

Originally posted by turbomad

Yes my so called Unichip tune wasn't actually that in tune was it, however he will be fixing it this Sat, and if he can't for some reason then I'll get my money back. So I might be back to check up on his work.

what did the guy have to say when u showed him the graph from the SAU dyno day? did u ask him where your extra 40rwkw's had gone?

[turbomad]

As I don't live in Melb I haven't shown him yet, he assured me that there's no way he would have left the A/F ratio at 10:1, so believe me come Sat I'll be sticking around watching his every move making sure he gets it right this time.

[Guest INASNT]

Originally posted by turbomad

As I don't live in Melb I haven't shown him yet, he assured me that there's no way he would have left the A/F ratio at 10:1, so believe me come Sat I'll be sticking around watching his every move making sure he gets it right this time.

y dont u get a s-afc or power fc instead of the unichip?

[whatsisname]

S-AFC - Only intercepts & allows fuel map changes, it doesn't do timing as per the PFC or UC.

Power FC - Costly even @ $1200 for the Power FC add ~$400 for tuning, compare this to a Unichip $1100 fitted & tuned (this is what I paid). Without a doubt the PFC is the better option as reflected by the higher price.

Unichip - IF, & it's a big IF! The UC is correctly installed & tuned then it WILL provide repeatable rwkw gains. My Unichip was able to provide tuning for over 215rwkw (this kind of figure was repeatable on more than one dyno) I also managed the 1/4 time in my sig' with the UC running the show. The power curve & A/FR's were both very smooth & consistent.

BUT...... It took a good tuner who was familiar with both the UC & the RB25DET to get the results! The original installer did a very poor effort @ tuning it. Even the best ECU isn't much good if it's poorly tuned.

Once you start aiming for over 220rwkw the UC "may" have trouble overcoming the stock ECU's AFM over voltage timing retard. This is the exact reason I decided to get the LT12 Microtech, however it "may" be possible to make 220+rwkw with the UC & get a decent power curve, I just wasn’t interested in stuffing around trying to find out!

[Guest Impul 25T]

Originally posted by lixid

open the factory ECU up  

and can't see anything special

Was the security tape still sealed across the ECU? If no tape, then the ECU could most definately been tittoo'd with.

[Silver-Arrowz]

I think people shouldn't take their dyno reading to personally. A dyno is to tune the car. I've seen some cars sive different reading on the same dyno's.

My one had about 160kw at the rear at Hills and 180kw on 4 wheels on croydon's dyno. :confused:

[turbomad]

Yes as Whatisname said it all comes down to cost, I paid $500 for the Unichip and $300 for the so called tune! Now with the SAFC I'd still have to add an ITC to get the same tuning features as the Unichip, which would throw it way over the $800 mark. Now that I've got the Unichip I'll try and get it right, if I can't then sure I'd consider an SAFC, time will tell.