r34 gtr tune results

[markr34gtr]

had my r34 gtr v spec tuned today at maz fix in brisbane...

final power was 408.3rwhp or 304.5rwks at 1.3 bar boost....pretty happy....

we worked out about 100rwhp gain or 75rwkw gain...with tuning...

going to run it to see if it can do an 11 sec pass. best with base power fc map was 12.5 at 110mph...at 1 bar boost .

i plan to run higher boost when i get some good fuel and a twin plate clutch...

mods are: hks 2530's with hks dumps

hks type r intercooler

nismo 280lt fuel pump & reg

700cc sard inj

power fc with z32 afms and pod filters.

denso iq22 plugs.

lightened flywheel and upgraded single plate.

cees short shift.

[Guest RedLineGTR]

Man i rekon most people would be happy with that...awesome effort...cant wait to see the 1/4mile runs.

[Jay95R33]

we worked out about 100rwhp gain or 75rwkw gain...with tuning...

Well done Mark, I bet your happy with the results

Any chance of a dyno printout ?

J

[ylwgtr2]

not good enough mark...you need a nismo twin clutch ...did you end up getting it working on the 34 power fc?

[meshmesh]

Hi mark,

you should be happy with that .. It's a good indication for me, as you know, I'm pretty much heading down the same destructive path as you with my R33 GTR S3.. except I might give the dumps & the intercooler a miss. I'll post em up as soon as we're done.

[markr34gtr]

not good enough mark...you need a nismo twin clutch ...did you end up getting it working on the 34 power fc?

yes got the power fc working was the immobilizer as we thought...

got the parts from dwane... thanks for that...

still got your nismo twin plate....

cheers..

[markr34gtr]

this is a good result for me for now but i think we can turn up the wick a fair bit more with the right fuel... oops..

[markr34gtr]

hope this works,,

[ylwgtr2]

yeah i still got it....dwayne ended up with 305kw with the same mods as you but he is using apexi turbos.....your result is spot on the money

[Micko]

Nice work Mark - gotta love those turbs eh?

I managed 415rwhp but could not hold boost very well. Still using stock cooler & afms but otherwise same mods.

What are you using for boost control? Got powerfc boost control but thing wont work for me...

[Sydneykid]

Hi Mark, good effort, as I said for a combo road/track car 2530's rule. I noticed the DD was not in Shoot Out mode. How hot was yesterday up there? It was 37 degrees here, that's almost a 10% horsepower loss.

Hi mesh, don't underestimate the benefits of upgrading the dumps. Based on our experience 300 rwkw is a good rule of thumb limit for the std R34 GTR intercooler, an R32 intercooler is not quite as good. So I'd save up a little more and do it properly.

Hi Micko, I suspect that not holding boost could be related to the std intercooler, there is around 5 to 6 psi of restriction in the std inlet system at 45 lbs per minute of airflow. The I/C is about 3 to 4 psi of that. I believe it's time for an intercooler upgrade. Just removing the restriction will give you another 20 or so rwkw, plus you will have the increased efficiency (lower air temps) from the turbos. I wouldn't anticipate too much gain from more cooling in the I/C, the std one is hard to beat in that area.

Hope that adds to this interesting thread.

[Snowman]

Great work mark - very nice curve. Can't wait until I can get myself some of these turbo's.

Just as a side point, how have you found the C's shifter? I was just about to order one of these in the next few weeks (if negun answer their emails!) but I haven't known anyone who has used them over the nismo one on a R34.

[meshmesh]

Based on marks upgrades, is this about the limit of the internals?

And, would an oil catch can help as far as protection?

[markr34gtr]

took it for a spin late last night.. wow...

dont know if the gearbox will like that much power... what are the 6speed getrag boxes power limits...????

had the boost set to 16psi and only had about 10 to 15 on the knock readings in the power fc...seems like a great tune to me... no flat spots or surging at cruise either...

i would highly recommend Maz Fix at underwood in brisbane.. they are starting to do a few more skylines mainly with Micro tech ecu but his power fc tunes are pretty good also...

they tune the brisbane streetmachines gtr with a power fc also and it runs 10s all day....

thats good result for dwanes car also.. what boost did he run to get 305rwks....???

hows your beast going ylwgtr2...

my next step will be some cams maybe 264 9.1mm hks or tommi cams...

[markr34gtr]

snowman the cees shifter is great, i believe it is 30% shorter shift where as the nismo one is only 15 % shorter..

if you can find a cees shifter grab it as they dont make shifters any more.. went bust...

think mine was 500bucks landed....

nengun is a bit slow at present he must be busy... but he will answer its usually worth the wait.....

[markr34gtr]

Nice work Mark - gotta love those turbs eh?

 

I managed 415rwhp but could not hold boost very well. Still using stock cooler & afms but otherwise same mods.

 

What are you using for boost control? Got powerfc boost control but thing wont work for me...

i am using a blitz id 111 boost controller.. its very fast acting and hlods boost at 16 psi so far easy.....

[markr34gtr]

Hi Mark, good effort, as I said for a combo road/track car 2530's rule.  I noticed the DD was not in Shoot Out mode.  How hot was yesterday up there?  It was 37 degrees here, that's almost a 10% horsepower loss.

Hi mesh, don't underestimate the benefits of upgrading the dumps.  Based on our experience 300 rwkw is a good rule of thumb limit for the std R34 GTR intercooler, an R32 intercooler is not quite as good.  So I'd save up a little more and do it properly.

Hi Micko, I suspect that not holding boost could be related to the std intercooler, there is around 5 to 6 psi of restriction in the std inlet system at 45 lbs per minute of airflow.  The I/C is about 3 to 4 psi of that.  I believe it's time for an intercooler upgrade.  Just removing the restriction will give you another 20 or so rwkw, plus you will have the increased efficiency (lower air temps) from the turbos.  I wouldn't anticipate too much gain from more cooling in the I/C, the std one is hard to beat in that area.

Hope that adds to this interesting thread.

it was 32 to 34 deg in brisbane yesterday and he started tuning at about 10am ..

so i would imagine it was quite hot when the final run was done... hot day, hot engine... etc etc..

last night was good at 10 pm intercooler air temp at 30 deg and colder air it went really hard...

what do you think the getrag 6speed box will handle safely.. power wise...???

with the right fuel what boost level do think is possible with my setup... it has 16psi now with 10 % tolulene....??

thanks for all your help along the way....

[markr34gtr]

Hi Mark, good effort, as I said for a combo road/track car 2530's rule.  I noticed the DD was not in Shoot Out mode.  How hot was yesterday up there?  It was 37 degrees here, that's almost a 10% horsepower loss.

Hi mesh, don't underestimate the benefits of upgrading the dumps.  Based on our experience 300 rwkw is a good rule of thumb limit for the std R34 GTR intercooler, an R32 intercooler is not quite as good.  So I'd save up a little more and do it properly.

Hi Micko, I suspect that not holding boost could be related to the std intercooler, there is around 5 to 6 psi of restriction in the std inlet system at 45 lbs per minute of airflow.  The I/C is about 3 to 4 psi of that.  I believe it's time for an intercooler upgrade.  Just removing the restriction will give you another 20 or so rwkw, plus you will have the increased efficiency (lower air temps) from the turbos.  I wouldn't anticipate too much gain from more cooling in the I/C, the std one is hard to beat in that area.

Hope that adds to this interesting thread.

[Merli]

Hmmmm...

If you're only ("only"... hehe :Oops: ) getting 304rwkw out of 2530s, perhaps my GT-SS turbos are too small I was hoping for 300kw @ all four from the GT-SS...

Hmmmm...

[markr34gtr]

i think you would need high boost to get the gt ss turbos to 300rwks. but i think it can be done...

just remember my run was at 16psi on a 32 deg day... so with 20 psi boost should see some more power maybe 330 rwks or so...

i am happy with 2530's they spool at about 4000 to 4200rpm and go crazy after that all the way to 8500rpm...

for circuit work gtss would be a bit less laggy but only maybe 500 rpm....

cheers..