Stock Rb26 + -9S + E85

[usmair]

Which makes it sound more like a flow issue, and not exhaust side as that tends to send temps up and hence detonate.

Which leaves valves, intake, leaks??, turbo, cam timing etc.

yep... 3.5" was made as 3" would not flow enough for 350kw+ so thats fine

turbos are in good nick...

cam timing... shouldnt be an issue if cams/cam gears are both standard??

leaks have been found and fixed

intake is new as we had to remove the AFMs due to the MAF less tune

which leaves valves I guess??

[GTR_JOEY]

"peak power right now is at 6300... car just starts struggling to breath and loses power"

Sounds like an exact thing i had.. Drop a set of Tomei TypeB 9.15mm in. Ignore what everyone says about running standard cams and try again and you won't live to regret.

Everyone is always talking highly of Unigroup but i find the car's he tunes runs quite low power and they are only in RWD/2WD? Too safe of a tune perhaps? Who knows...

Don't think it's that much of a mystery mate.

I'd say it's due to the fact yavuz doesn't feed customers bullshit dyno graphs to keep them happy.

Get a figure from ur tuner then take it to Unigroup and get a real read out

[destrukshn]

can you please provide further details of your situation?? even the tuner said standard cams are perfect for -9s

yeh Yavuz only has a 2 wheel dyno so readings are in RWD... he does tune them to last so they might be slightly lower in power perhaps...

lol.. if you have a standard motor and you want to make 380-390kw i dont think especially with gt-ss sized turbos. i just think its a little too ambitious but thats just my opinion and from experience. I'd say 350-360max on eflex with a set of cams?

The problem i had was i couldnt get power above 6000rpm, put a set of cams in on a STANDARD motor and it brought the mid-top end straight up. You can feel the difference for the midrange-topend power.

With the 2wd readings, it should be higher than in 4wd. His readings are definitely lower, but as i said, who knows, everyone modifies their head different and it could just be that or as i said it could be his tuning too safely.

Don't think it's that much of a mystery mate.

I'd say it's due to the fact yavuz doesn't feed customers bullshit dyno graphs to keep them happy.

Get a figure from ur tuner then take it to Unigroup and get a real read out

lol.. did i say feed customers bullshit dyno graphs? all i said that he could be tuning his cars too safely?

Get a figure from you tuner and take it to unigroup to get a real read out? lol seriously dont be so ignorant. Each to their own then, but its just my opinion on what i've seen from other peoples dyno graphs tuned by unigroup

[GTR_JOEY]

"Everyone is always talking highly of Unigroup but i find the car's he tunes runs quite low power and they are only in RWD/2WD?"

So you find that your not impressed with Yavuz's work? you look at a dyno graph power reading and becasue u think its a bit low you wonder why everyone talks so highly of him? dont be so ignorant

"Too safe of a tune perhaps?"

i realise this is a question, im sure Yavuz knows what "too safe" is

[destrukshn]

"Everyone is always talking highly of Unigroup but i find the car's he tunes runs quite low power and they are only in RWD/2WD?"

So you find that your not impressed with Yavuz's work? you look at a dyno graph power reading and becasue u think its a bit low you wonder why everyone talks so highly of him? dont be so ignorant

"Too safe of a tune perhaps?"

i realise this is a question, im sure Yavuz knows what "too safe" is

Biased much? Thats what i mean about being ignorant is because you are like the rest of the sheep on here and i can tell from your response. I am just trying to say that there are other tuners out there. E.g. JEM, Powertune, Unique Automotive. Not necessarily everyone on SAU has to go Unigroup though a lot of people on this forum goes to him because of people like you and N1GTR whom is always putting forward recommendations. Although those that do are happy with their work and i presume you are one of those guys who are?

In saying that, I am just saying i feel he tunes perhaps a little safe and thats why the power readings is a bit low for the mods on the cars he tunes. Thats all, nothing about him being a crap tuner or nothing. You put forward your recommendation and opinion and i gave mine.

[DVS JEZ]

Yavuz the smartest tuner i have met.

An engine will only make what it can make. But then different dyno's is like apples and oranges. My GTR made 296kw of yavuz's dyno and 296kw on the mainline i use.

Ive had plenty if customers come from other shops with really high dyno readouts, and first run on the mainline are

Down 30kw.

On 98 ron most engines are knock limited, so u can only push a motor to det then add a safety margin. Basically.

[Hadouken]

Word of mouth is the most powerful tool for businesses. If everyone comes out of his shop and starts to recommend him, then he must be doing something right, no?

[R31Nismoid]

Well I made 340rwkw, 19psi on -9s on PULP

Stock cams.

Put the -5s on, 365rwkw @ 19psi

Both above 6000rpm, was 7500rpm or so.

No so sure stock cams are necessarily the issue if the cam gears are set right.

[usmair]

Well I made 340rwkw, 19psi on -9s on PULP

Stock cams.

Put the -5s on, 365rwkw @ 19psi

Both above 6000rpm, was 7500rpm or so.

No so sure stock cams are necessarily the issue if the cam gears are set right.

yep

something else is a foot!

[SiR_RB]

Ur not running adjustable cam gears?

[usmair]

nope

[R31Nismoid]

Well that's prime place #1 to start.

The gains to be had, for such a cheap part... One of the best value mods you can do!!!

[Rolls]

In a set up like this what are the typical gains nismoid?

[R31Nismoid]

20rwkw through the mid-range is not uncommon. There are graphs floating around, Beer Baron posted back to back a few years ago.

Doesn't alter peak power all that much however

[SS8_Gohan]

running Racepace adjustable cam gears, picked up 300-400rpm better response and didn't lose any top end. Advanced intake, didn't really touch exhaust i don't think.

[Deano 1]

Have they done any runs witht the ebc setup for around 18-20psi? Just to c what it makes?

[usmair]

I wanted full boost before 4k and was going to get cam gears but was assured i wouldnt need em.. and he did pull it off.. 25psi by 4k is pretty awesome..

They would have tried around 20psi... Id say it would have been around 310kw.. will check tomorrow

[levinboy]

What dumps are you running??

When my engine was std (just cam gears) I was making 335kw at 22psi With my -9s

So I don't think springs are the issue there is a restriction somewhere

If you have std intercooler maybe check if there is pressure dropping through it, maybe in need of a clean??

As the std cooler is fine for the application

[Piggaz]

was going to get cam gears but was assured i wouldnt need em..

Never understood this. Cam gears are the best thing you can do apart from putting fuel in the car! (providing the guy tuning it knows what he is doing and spends the time setting them up)

[usmair]

What dumps are you running??

When my engine was std (just cam gears) I was making 335kw at 22psi With my -9s

So I don't think springs are the issue there is a restriction somewhere

If you have std intercooler maybe check if there is pressure dropping through it, maybe in need of a clean??

As the std cooler is fine for the application

standard dumps

your springs were working fine... mine appear to be screwed

the bolt ons have been check, checked again then checked one more time... he has eliminated them as the issue

Never understood this. Cam gears are the best thing you can do apart from putting fuel in the car! (providing the guy tuning it knows what he is doing and spends the time setting them up)

yeh i dont think PT use them very often... im still very happy with the response.. on paper at least... will drive it tomorrow