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Rb26 -how Do You Get Good Hp Numbers From Tuning ?

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MercuryMotorsport Rising Star

MercuryMotorsport

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I think I can shed some more light on this whole thread. For those that havent met me, I am Trent, owner of Mercury Motorsport. Just for the record I didn't want these dyno graphs to be posted because I dont want this to turn into a workshop vs workshop shit fight. All of the workshops need to get along and I know that we have a fantastic relationship with Godzilla Motorsport as well as a great respect for CNJ and their work.

With the GTR in question, there was nothing really tunable on the car apart from the boost controller, camshaft timing and the CAS. From my understanding, the car was taken to Godzilla shortly after it arrived in the country to "see how it goes". Then after some driving around, the car was up for sale. Now with the mods involved on this car, there was some visual inspections required to prove that parts were in fact in the engine etc, so that the owner could sell it knowing that he was in fact providing what he was told was in the car during the import process. The owner told me various parts had been removed/reinstalled etc so when the car was taken to CNJ stuff had been "fiddled with". The whole reason it went back on the dyno was to show the potential buyer that it was the real deal and unfortunately it didn't make the power at CNJ. I believe they ran out of time (was a friday arvo) and the buyer was only in town until saturday arvo (arrived friday) so I offered the use of our dyno on the saturday morning to see if we could help.

When the car was on our dyno, it did indeed make the same power as CNJ's graph from the day before, so we set about looking over the car to try and find what was wrong with it. We pressure tested it for leaks, found none, checked the boost controller and ecu, removed the timing cover to check camshaft timing. All appeared satisfactory. In talking to the owner we realised that the CAS had been disturbed since its visit at Godzilla (removed the covers to inspect the cams and belt) so over a few runs we added more overall ignition timing (all the while checking for detonation) and made significant gains along the way. We also made a few cam gear adjustments but to no gain, so we put it back to where it was and ended up on 514hp (customer requested imperial units) and as he was in a rush to take the buyer for a drive, we left it at that.

At the end of the day, I was just happy to help and get the power back to the same as when the car first arrived from Japan and to have another happy customer.

femno Grand Master

femno

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Posted
With the GTR in question, there was nothing really tunable on the car apart from the boost controller, camshaft timing and the CAS.

Haha no ECU? No wonder the tunes were so cheap, they didnt even touch the ECU!

You really should have mentioned this before posting them as 'tunes'.

Tool.

MercuryMotorsport Rising Star

MercuryMotorsport

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Posted
sorry but I don't see how an untuned standard ecu will make 370rwkw no matter what else has been done

I believe it is a chipped ECU done in Japan for its setup, similar to mines however another brand.

Beer Baron Grand Master

Beer Baron

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well strike me down if the full story isn't completely farken different to the first one. so the real answer is:

the car was dyno checked (not tuned) at godzilla and made X amount of power

the car was fiddled with including cas being misaligned resulting in base timiing being out.

car was driven to CNJ again to be dyno checked. car was massively down on power but of course it was as it was in a different configuration and on a different dyno

car was driven to mercury where the story came out about what it had been through and where the problem may well be. problem was fixed car was back to it's original performance.

I think the main issue here is someone needs to understand the definition of a tune.

Beer Baron Grand Master

Beer Baron

Posted
Posted
If someone can tell me what it takes to tune chicks yo then i am all ears :D

if I knew that I would not have to ask you for sleep overs at your place whenever i'm in melbourne... oh the shame.

Brandon Veteran

Brandon

Posted
Posted (edited)
So what are you saying?

You took it to 3 of the best tuners in QLD and non of them can tune a stock ecu

:D

PM me if you like to know who can give your Nissan ecu a tune

MercuryMotorsportPosted 15 Jun 2009, 03:23 PM QUOTE (Duncan @ 15 Jun 2009, 02:58 PM) post_snapback.gifsorry but I don't see how an untuned standard ecu will make 370rwkw no matter what else has been done

I believe it is a chipped ECU done in Japan for its setup, similar to mines however another brand.

Its not a stock ECU

Edited by Brandon

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