Jump to content
SAU Community

Recommended Posts

  • Replies 539
  • Created
  • Last Reply

Top Posters In This Topic

full boost is in the high 3k 3600-3800 i don't know why it looks that way on the dyno sheet but its way earlier than 5k.

also for every ones interest my mod to the air box is real dam good dyno run with the box and without was the same,we took the filter out and ran it and put it back in and it was the same power.

so my gamble was 110% right.

Edited by WARLORD

Ah ok, thats interesting.

The dyno is indicating a powerband from 120-180kmh, so 1/3 of the rev range (roughly). If you were to do it basically 8200/3 = 2733, x 2 = 5466. So the sheet is saying its on power at 5500 if its revving to 8200.

Is it possible that graph is for a lighter ramp rate or something like that?

on the ecu maps its set a 9000rpm as i have just looked at the tune so i have NFI why or what id love to really tell you what i think at the moment its easier if i just pm you about things i also have haltech reviewing everything as we speak online.

yes you are correct 4820rpm full boost of 23 psi the build up is so fast that you could swear its much earlier its tuned in ve mode (volumetric efficiency tuned)which is new to me.

That's good power for 98. I'm guessing its on full pelt about 5k? When does it start to get urgent?

Edited by WARLORD

Your setup is screaming for E85 Nick, that turbo is capable of making big numbers for its size.

I think 35R size turbos and bigger are wasted on setups that run moderately low boost levels. Chasing response is not really a goal anymore and you will only get frustrated doing so.

Very nice power but I am so far fairly disappointed with the lag, feeling reasonable considering how late the turbo comes on is more of a credit to the rest of the setup in spite of as opposed to thanks to the turbo. Unless there is a setup issue responsible of course, that is definitely laggier than just would have expected!

i think its probably normal for a gtx of that size, my gtx3076 on 98 was a late turbo, 18psi at 4000rpm but probably 4400ish til the back tires broke free.

E85 and more boost helped alot, but would do on most turbo's anyway.

Edited by AngryRBGTX

Very nice power but I am so far fairly disappointed with the lag, feeling reasonable considering how late the turbo comes on is more of a credit to the rest of the setup in spite of as opposed to thanks to the turbo. Unless there is a setup issue responsible of course, that is definitely laggier than just would have expected!

disappointed nar its not that bad it really doesn't feel laggy honestly has anyone else had there car tuned on ve cos ive been in cars with lag but this feels different it could be set up.in the top end you see the torque drop of it was explained to me that its cos of the cams need to be bigger tuning in volumetric efficiency calculates the amount of air that can flow throw the engine and cos the head is ported the cams are my restriction ..............true or not i have NFI..lol thats the only set up issue that i can think of

That's odd, its on fairly late. Yet if it feels like its on much earlier I'm guessing it actually has good pull before being on boost?

its hard to explain it does not feels as it looks or sounds buy the dyno or the full boost by 4800 i need to do a vid on the car

If the efficiency of the engine drops off your VE numbers will tend to flatten out and sometimes run backwards.

That torque curve says it all. Add some more boost if you have a decent controller with rpm correction at the point where the torque curve falls over (150km/h). Power will keep climbing and torque curve will stay flatter.

Edited by Shane_954

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

    • You know how your car rolled through a fence in your last jacking escapade? Scissor jacks increase the likely hood of that sort of thing happening immensely!
    • http://calfinn.com.au/product/1500kg-standard-trolley-jack-cj-2t-c/1500kg-standard-trolley-jack-cj-2t-c   I have this and fits under a S3 33 GTR with no issues. Purchased in 2009 and not one issue. It was $950 back then. Not cheap but something so important isn’t worth cheaping out on.
    • Just trying to get my head around this. At 5psi of boost, you turn on your wmi pump, and then you're using a 3000cc injector, to allow flow upto the actual engine, where you have your 6x200cc injectors and a 500cc injector. If the above is correct, what advantage are you obtaining by having the 3000cc injector blocking flow, is this just incase a line breaks between that injector and the motor you can stop flow immediately? Or are the 6x200cc and 500cc less injectors and just spray nozzle?
    • Welcome! New member myself, but I had an R33 back in 2002. Best advice I could give, based on my experience: if you're running the factory turbo, be very conservative with boost. I made the mistake of just fiddling around with the boost controller and cranking the boost for fun, and the end result was my intake pipes popping off frequently from the constant deluge of oil that was being blown into the recirc by the stressed-out turbo, which itself was siphoning oil from the engine and farting it out both sides of its centre bearing (or something to that effect). If I could do it all again, I would have gotten a new turbo and had a tune dialled in professionally and then just left it alone! Funny you mention the metal shavings in the gearbox, as I had the same thing - the probe plug (magnetic drain plug, essentially) would come out caked with shavings. At least it was doing its job. Not sure if that's just sacrificial wear and part of the deal, or if my gearbox was shagged, but I wasn't abusing it. Enjoy the R33 - they're a dying breed, and if they weren't $35k+ on CarSales in Queensland, I might have picked up one of those again, instead of the 370GT I own now (though I'm loving the 370GT, that big 3.7L V6 just hits different).
    • Howdy folks. I owned an R33 back in 2002, which was thoroughly beyond my capacity (financially speaking) to maintain/insure, so we parted ways in 2004. Fast forward 21 years (to literally yesterday, in fact) and I'm now the proud owner of a 2007 V36 370GT. I'm happily surprised by how much power the VQ37VHR makes, compared to the RB25DET, considering the latter is turbocharged. I had planned to add a turbo at some point but I'm on the fence about whether I'll even need it (though I do love the sudden onset of extra torque). Any other 370GT owners around the traps, I'd love to hear about your experiences with this car (good and bad).
×
×
  • Create New...