Jump to content
SAU Community

Recommended Posts

Hi guys, I have just had my gts25t tuned to 190rwkw ;) Torque is amazing and power is great!

The mods are as follows:

-3" turbo back exhaust

-Walbro Gss342 fuel pump

-GFB Boot T

-Tuned Z32 ecu.

Running 10-12psi.

Stock turbo

Stock intercooler

I sent the chip away to a tuner in Auckland who did a pre-planned map for 190rwkw. I have not had it on a dyno and don't know if I will bother. I phoned a guy who ran a Dyno locally and he said that results vary greatly from each dyno. Some would read 140rwkw and another 200 rwkw. He thought with my mods I would reach 150rwkw on his dyno?! I thought it would be doing that with just a 3" exhaust.

Seemed pointless to me?

So, would it be safe to say that my car with those mods would be reaching 190rwkw? I know it feels definitely faster than stock.

Also, for curiosity sake, what cars could I match with running that kind of power?

cheers,

Dan

Link to comment
https://www.sau.com.au/forums/topic/344643-just-been-z32-tuned/
Share on other sites

  • Replies 78
  • Created
  • Last Reply

Top Posters In This Topic

Take it to Nightspeed at Meremere on Friday night and find out, or even better Nizfest drags on Sunday ;)

Given you haven't had the car itself tuned, much less had it on a dyno... anyone could guess. I certainly wouldn't be going claiming a power figure as you are at the moment. I'm not really convinced its a good idea running a chip tune some random put together without knowing your car.

Trust me this guy has had heaps of experience tuning many skylines and he has done the same tune for others... so he tells me lol.

I'm not worried, if you are happy with it then godspeed. Try it out at the drags, only way to know how it goes.

Trust me this guy has had heaps of experience tuning many skylines and he has done the same tune for others... so he tells me lol.

I've heard that more times than I've had hot dinners.

Plus at the end of the day all you have is a mail order tune. It will not be as accurate as one done on the day by the tuner as "mail order" tunes are generally more conservative to makeup for the lack of onsite work the cars dont shit themselves

I belive Tricky Tune is up your way. Get your chip tuned in the car at least and on a dyno ideally. And yes take a trip to Meremere for a reality check. OOps it appears Mr Tricky Tune has taken his skills to Australia. You will have to take your car to the guy who made the chip in Auckland (was it Andy?) and get him to refine the tune in the car and then carry on to Meremere!!

I belive Tricky Tune is up your way. Get your chip tuned in the car at least and on a dyno ideally. And yes take a trip to Meremere for a reality check. OOps it appears Mr Tricky Tune has taken his skills to Australia. You will have to take your car to the guy who made the chip in Auckland (was it Andy?) and get him to refine the tune in the car and then carry on to Meremere!!

Yes it was Andy from X-tunes. From my understanding 190rwkw was a safe tune lol. I might have to travel down there to dyno it. I just don't know how worth it is since dynos don't sound very accurate.

Yes it was Andy from X-tunes. From my understanding 190rwkw was a safe tune lol. I might have to travel down there to dyno it. I just don't know how worth it is since dynos don't sound very accurate.

yeah chuck it on dyno to make sure the tune is actually safe and good (a/f ratio).. personally i dont know why u would bother with a chip-in and risk engine failure.. does x-tune offer warranty/replacement if ur engine shits itself?

Not to sound like another hater here, as all it comes down it is whether or not you're happy with the car....but I was making 190rwkw on the stock ECU with a bleed valve controlling boost to ~11psi...

i have never had one pull over 180rwkw that was std on my dyno... but dynos vary.

Yeah exactly. It pulled that number on 2 different dynos though (one DD, and the other was whatever gives the style of printout Dr Drift uses)....and in all honesty, I can't say 100% that the ECU was stock. I never remembered to get it back off the workshop that installed the ViPEC...my silly mistake.

Also, my timing may have been slightly increased due to CAS being adjusted, but i don't know.

Yes it was Andy from X-tunes. From my understanding 190rwkw was a safe tune lol. I might have to travel down there to dyno it. I just don't know how worth it is since dynos don't sound very accurate.

The dynos should have an accurate AFR plot, and before you go make sure the run will include knock sensing. IMO you really want to check those things to get some confidence that the tune IS safe. Every car is different and tuner will have made the assumption that everything on your car is working well, and that is something neither of you *know*.

You should be more interested that your motor is not going to blow up rather than if it has 11ty billion killawasps :(

The important thing is to get the ecu tuned in the car. I have had Andy tune my car on the road and on a dyno - you don't need the dyno figure although the chart is handy but Andy has all the gear to properly tune your ecu in the car. The mail order tune should be conservative to be on the safe side so a tune in the car will get the best out of your limited mods. The 1/4 mile time will mean more than a dyno figure which is really only useful for comparing the same car on the same dyno after you have done some mods.

Yes it was Andy from X-tunes. From my understanding 190rwkw was a safe tune lol. I might have to travel down there to dyno it. I just don't know how worth it is since dynos don't sound very accurate.

they are a shitload more accurate that you saying your car has 190rwkw because you 'think' it does... :P

they are a shitload more accurate that you saying your car has 190rwkw because you 'think' it does... :P

I phoned a local guy and he told me that figures ranges hugely on different dynos... to quote him he said one might say 140rwkw and another 220! Sounds like waste of time to me.

My cousin said he dynoed his subaru and it came to 380awkw. He said he doubted it made that much power and he thought it was more like that power at the flywheel.

Everything is running sweet on my car as far as I know... there is no knocking sound etc, everyhting going smooth. Doing a premapped tune as opposed to a full dyno test retune is about $300 to $900... big difference.

I phoned a local guy and he told me that figures ranges hugely on different dynos... to quote him he said one might say 140rwkw and another 220! Sounds like waste of time to me.

Well sadly, he is an idiot.

Dyno variance in most cases is +/- 15rwkw, thats a reasonable range.

80rwkw, thats just plain horse shit :P

Put it on the dyno - and not for a rwkw figure.

Use it to see the AFR's, the power/torque/boost graph and so on. Will tell you exactly how the car is performing and is a MUST for anyone modifying

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now



  • Similar Content

  • Latest Posts

    • What does it look like with highway driving? And yes, I had a similar thought as Duncan. It looks quite similar in my Stagea and I have made myself accept it as normal. Might have to look into it some day  
    • While I was waiting for the new parts to come in for the charge pipe and radiator I decided to do some turbo modification. The drive pressure (exhaust backpressure) was a lot higher that I thought it should be. For 32lbs of boost drive was 55lbs. The turbine housing is a 1.10AR and my turbo builder has suggested to go to a 1.25AR. To test if a larger AR would do anything to reduce drive pressure AND not spend any money I decided to hog out the divider in my current housing. I removed it from the inlet and the whole way through the housing.  After reassembly and testing it doesn't look like this modification did anything for reducing drive pressure or requiring more fuel (making more power). Oh well, it was worth a shot. We'll get some data at the track if it makes it past the 60ft. I also machined a $7 shift knob off Amazon to fit my Stillway shifter since I didn't like the Stillway shift knob. Next on the list was the radiator replacement and fabrication of a new intercooler tube that had no silicon coupler. No pictures of this - I was short on time each night after work to get this done and didn't stop to take pictures.  Next was to get the clutch disks out and replaced. Previously when installing the dogbox I had ordered a set of the same sintered iron disks I had been running because I switched to the 26-spline input shaft. I thought it was odd that they didn't have any markings or brand name on them like all my old disks had but installed them anyway. At the track I could not get the clutch to lock up using my normal strategies. After two track nights I reached out to the clutch manufacturer and ask their thoughts. They said they had to switch the material out because they were having trouble getting the original material and that this new material would not take to being slipped very well.  So out with the first set of 26-spline disks and in with the correct material 26-spline disks. While I had the trans out I added an inspection/service hole. I've wanted one of these for a while. Now I can have a look at things and change the front cover shimming when needed (clutch wear). I hustled and got the clutch change done in a few hours on a Saturday. Hopped in the car and drove home. On the way home I did a 1-3 pull. When shifting from 2nd to 3rd the core plug in the back of the cylinder head popped out and dumped all the coolant. Thankfully I was only 30 seconds from home and coasted it there. Datalog showed nothing unusual and 2.5psi of coolant pressure. That plug has been in there since 1992 but I guess it worked its way out. Pulled the trans AGAIN and replaced the plug, JB welded it in, and made a brace. Also deleted the head drain I had added in during the bearing issue fiasco.  I am currently changing my boost control plumbing to make it cleaner. After that is done I'll make another attempt at getting past the 60.
    • Are you 100% sure this isn't tune related?
    • 140-150 across the board. At this point hoping the grounding harness fixes it. My grounds are all tied to the chassis and none to the battery. For SR and KA that’s never been a problem for me but had a few other guys here and Reddit who told me RB really like a very solid ground setup tied to the battery so going to try that next, I’m stumped if that doesn’t do it. Never had a car have spark and fuel and not fire off before. Only thing I can think is the spark is intermittent/weak because of grounds nothing else really makes sense at this point 
    • I am having close to the same issue. Can you help me with what wire you grounded to get your pump to trigger?
×
×
  • Create New...