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Is This A Good Tune For A (fairly) Standard R33 Gtr?

some_cs_student
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some_cs_student Veteran

some_cs_student

Posted
Posted

Hey,

I got my R33 GTR tuned recently, I went from a Japanese Mines ECU to a PowerFC + adjustable cam gears and the boost was upped to about 1 bar.

Stock turbo's, aftermarket radiator, high flow cat, 3inch turbo-back exhaust (HKS Super dragger), stock airbox with highflow panel filter and hot weather (30degrees plus unless the workshop had air conditioning :)).

I believe those are the only performance related mods my car has.

So is this a good tune? I was thoroughly impressed with the power and the response.

Regards,

Gareth

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GeeTR Grand Master

GeeTR

Posted
Posted (edited)

Looks fairly spot on.

If you had a wide band on it, plus liked to tinker, it could be 2-5 points leaner. (EDIT: by this, I'm not saying its not a good tune; its a great 'safe' tune for a customer. I'm saying if it was mine, or somone that can see live AFR's, then I'd run it closer to the edge, and be wary after filling up / Summer / towing a boat)

What you have is pretty safe.

Rem, your graph shows a WOT power run, so doesn't show other 'day to day' load cell results.

Edited by GeeTR
R31Nismoid Grand Master

R31Nismoid

Posted
Posted
really? A:F ratio looks a bit rough, still good but could be a bit better?

PS - *my limited experience denotes my opinion means little*

Its the graph power curve thats important.

As long as the AFR's are safe, it doesnt matter if they jump around a little bit to achieve a brilliant curve like that :(

Sydneykid Grand Master

Sydneykid

Posted
Posted

What would you prefer, slavishly tuning to a predetermined A/F ratio? And getting a rough power curve as a result? Or tuning for a smooth and progressive power curve and letting the A/F ratios fall wherever is best for power?

I know what I would choose.

Cheers

Gary

some_cs_student Veteran

some_cs_student

Posted
  • Author
Posted
Is that RWKW??

Did you have a base figure? Curious as i want to do similar mods on my 33 GTR. Also what dumps and front pipe you running. Cheers Nick

RWKW, its not amazing power for a GTR, but I'm thoroughly impressed by the response of the car, and its only running stock turbo's in the end.

I am unsure about the front pipe, its a HKS super dragger muffler, 3inch exhaust system, it *might* be turbo back but I'm not sure.

The car has very few engine related mods, its all suspension and cooling mods...

700HP-GTR33 Mentor

700HP-GTR33

Posted
Posted

Better get yourself some new Turbo's......

Pushing those figures it won't be long before the exhaust wheels go.

Could have saved a bit for Turbo's first then Powerfc with tune.

some_cs_student Veteran

some_cs_student

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  • Author
Posted
Better get yourself some new Turbo's......

Pushing those figures it won't be long before the exhaust wheels go.

Could have saved a bit for Turbo's first then Powerfc with tune.

This was tuned by a trusted tuner, I didn't say "push the boost to 1 bar", he decided to put it there and I'm sure it will be fine, I have locked the boost controller so it won't accidentally get turned beyond 1 bar.

Lil_Bobby_260 Mentor

Lil_Bobby_260

Posted
Posted

1bar is somewhere between 14 and 15 psi...? doesnt sound too high? I have the following to go on my 260RS -

3" exhaust inc front pipe and high flow cat, 600x300x100 fmic, apexi PFC, K&N panel filter in standard box. Running 1 bar i should see similar? are our setups fairly similar then?

700HP-GTR33 Mentor

700HP-GTR33

Posted
Posted
Its running 1bar.

Perfectly fine for good condition GTR items, not a lot fail.

Its only those who push harder that see issues

Plenty of 1-bar GTR's around

Yes..correct Ash. I am all for what you are saying.

Assuming.....A 100% history of the car is available..and the Turbo's have not seen more than 100K of service.

Lets face it ceramic /exhaust wheels are not the most reliable things to have stuck on a 250KW GTR even RW.

some_cs_student

The tune you have is great...and the quality work your tuner has done for many on here is un-questionable.

I was just trying to say that if I had a GTR33 "Which I have" and it still ran stock Turbo's "Which you are",

this is one of the first recommendations I would have suggested before your tune.

My advice to you still stands.

Change your Turbo's :)

some_cs_student Veteran

some_cs_student

Posted
  • Author
Posted
1bar is somewhere between 14 and 15 psi...? doesnt sound too high? I have the following to go on my 260RS -

3" exhaust inc front pipe and high flow cat, 600x300x100 fmic, apexi PFC, K&N panel filter in standard box. Running 1 bar i should see similar? are our setups fairly similar then?

I have a stock intercooler, but similar mods performance wise. Drop me a PM when you get it tuned, I'm curious as to how you will go :)

Yes..correct Ash. I am all for what you are saying.

I was just trying to say that if I had a GTR33 "Which I have" and it still ran stock Turbo's "Which you are",

this is one of the first recommendations I would have suggested before your tune.

My advice to you still stands.

Change your Turbo's :P

Point taken mate, I will do it *one* day, need to save up more $$$ first, and then I'll worry about going for aftermarket turbo's or high flowing them or similar.

The next concern would be with different turbo's, engine rebuild :D

Anyway, appreciate the advice :)

-

Gareth

Lil_Bobby_260 Mentor

Lil_Bobby_260

Posted
Posted
I have a stock intercooler, but similar mods performance wise. Drop me a PM when you get it tuned, I'm curious as to how you will go :/

Will let you know. Hoping for 220 or so, but we'll see.

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