berzerkled Posted August 13, 2006 Share Posted August 13, 2006 (edited) Finally got all my parts in and took the car to the dyno and the results were less than I expected (although, isn't that always the case ). I was under the assumption that the HKS GT2530s would spool much much faster than they did and I was expecting around 450 whp. Let me know what you guys think.. A/F ratios: started off weak but were spot on after moving around the fuel map and we peaked injector duty at only 74%. Boost: we went up to 1.4 bar to play it safe on the GT2530s, and when it finally got to full boost, it held steady there moving around +/- .2 bar. Power Mods: 2 x HKS GT2530 Turbos 2 x 300zx MAFs Ogura Twin Plate Clutch Greddy Front Mount Intercooler Sard 722cc Fuel Injectors Sard 276lph Fuel Pump NGK Iridium Racing Spark Plugs Apexi PowerFC Stand Alone Engine Management Apexi PowerFC Boost Control Kit Apexi PowerFC Commander Greddy dual dump pipe /w decat Apexi exhaust damper control 5Zigen Exhaust Notes: Dyno sheet is in yankee hp not aussie . It was done on a RWD dyno with AWD fuse pulled, no AWD ones around here. Normal pump fuel was used the whole time. Not sure why it's showing the image as dead below, but it opens when you click it. Edited August 13, 2006 by berzerkled Link to comment https://www.sau.com.au/forums/topic/130125-r32-gtr-gt2530s-dyno-results-lacking/ Share on other sites More sharing options...
The Dan Posted August 13, 2006 Share Posted August 13, 2006 I know a GTR running N1's / power FC / Injectors / exhaust getting 385rwhp on 1 bar. Something is wrong there mate. Link to comment https://www.sau.com.au/forums/topic/130125-r32-gtr-gt2530s-dyno-results-lacking/#findComment-2406630 Share on other sites More sharing options...
blk180 Posted August 14, 2006 Share Posted August 14, 2006 CAMs and what is normal fuel over there. we use 98 or 100 RON over here. Link to comment https://www.sau.com.au/forums/topic/130125-r32-gtr-gt2530s-dyno-results-lacking/#findComment-2407186 Share on other sites More sharing options...
Driver Posted August 14, 2006 Share Posted August 14, 2006 CAMs and what is normal fuel over there. we use 98 or 100 RON over here. yeah im getting 405hp with pfc, n1 turbos Link to comment https://www.sau.com.au/forums/topic/130125-r32-gtr-gt2530s-dyno-results-lacking/#findComment-2407205 Share on other sites More sharing options...
Abo Bob Posted August 14, 2006 Share Posted August 14, 2006 Not only is the fuel over there different but it's graded differently too. Can't remember the conversions. Link to comment https://www.sau.com.au/forums/topic/130125-r32-gtr-gt2530s-dyno-results-lacking/#findComment-2407238 Share on other sites More sharing options...
Beer Baron Posted August 14, 2006 Share Posted August 14, 2006 is there a graph with boost pressure against RPM? torque peak at 6500 seems to be like it's very laggy, guessing it doesn't hit full boost until after 5500. Link to comment https://www.sau.com.au/forums/topic/130125-r32-gtr-gt2530s-dyno-results-lacking/#findComment-2407259 Share on other sites More sharing options...
fat200sx Posted August 14, 2006 Share Posted August 14, 2006 they use 91 octane, there premium is around 94. Still far to laggy something must be wrong Link to comment https://www.sau.com.au/forums/topic/130125-r32-gtr-gt2530s-dyno-results-lacking/#findComment-2407273 Share on other sites More sharing options...
berzerkled Posted August 14, 2006 Author Share Posted August 14, 2006 (edited) Thanks for the replys guys.. CAMs and what is normal fuel over there. we use 98 or 100 RON over here. The 91 I was using is spot on to your 99. is there a graph with boost pressure against RPM? torque peak at 6500 seems to be like it's very laggy, guessing it doesn't hit full boost until after 5500. I don't have any sort or graph, but yeah full boost was very very slow. I'm thinking it's one of three things: 1) I have the PowerFC (PFC Boost Control Kit installed) set for 1.4 bar @ only 60% duty, should I bump up the % and lower the boost I'm asking for? 2) The actuators are way off on the turbos for whatever reason and just need to be tightened? I don't know if the gt2530 actuators can even be tightened.. 3) Boost leak? I really have no clue on this one, just throwing some ideas out there. Thanks again guys. Edited August 14, 2006 by berzerkled Link to comment https://www.sau.com.au/forums/topic/130125-r32-gtr-gt2530s-dyno-results-lacking/#findComment-2407312 Share on other sites More sharing options...
Sydneykid Posted August 14, 2006 Share Posted August 14, 2006 My first guess would be not enough ignition advance. How much knock are you seeing? cheers Link to comment https://www.sau.com.au/forums/topic/130125-r32-gtr-gt2530s-dyno-results-lacking/#findComment-2408629 Share on other sites More sharing options...
berzerkled Posted August 14, 2006 Author Share Posted August 14, 2006 My first guess would be not enough ignition advance. How much knock are you seeing? cheers 15 was the highest Link to comment https://www.sau.com.au/forums/topic/130125-r32-gtr-gt2530s-dyno-results-lacking/#findComment-2409933 Share on other sites More sharing options...
Amaru Posted August 15, 2006 Share Posted August 15, 2006 (edited) they use 91 octane, there premium is around 94. Still far to laggy something must be wrong Their octane ratiung however is calculated on RON+MON/2, whereas ours is just RON. American 91 octane is basically equivilant to our 98 octane, and the 94 octane well surpasses out premium fuels. Edited August 15, 2006 by Amaru Link to comment https://www.sau.com.au/forums/topic/130125-r32-gtr-gt2530s-dyno-results-lacking/#findComment-2410938 Share on other sites More sharing options...
berzerkled Posted August 15, 2006 Author Share Posted August 15, 2006 Anyways, beyond gas differences. Anyone suggest any ideas as to what the problem could be? Link to comment https://www.sau.com.au/forums/topic/130125-r32-gtr-gt2530s-dyno-results-lacking/#findComment-2411449 Share on other sites More sharing options...
blk180 Posted August 16, 2006 Share Posted August 16, 2006 bump some people must have ideas Link to comment https://www.sau.com.au/forums/topic/130125-r32-gtr-gt2530s-dyno-results-lacking/#findComment-2413741 Share on other sites More sharing options...
berzerkled Posted August 20, 2006 Author Share Posted August 20, 2006 Well something is definatly wrong.. I just did a 13.09 @ 105mph in the quarter mile, with a peak boost of 1.35 bar and everything appeared fine on my Apexi Commander. So my only 2 thoughts on what could be wrong: 1) The actuators are way off on the turbos for whatever reason and just need to be tightened? I don't know if the gt2530 actuators can even be tightened.. 2) Boost leak? Any ideas? Link to comment https://www.sau.com.au/forums/topic/130125-r32-gtr-gt2530s-dyno-results-lacking/#findComment-2422951 Share on other sites More sharing options...
rob82 Posted August 20, 2006 Share Posted August 20, 2006 If you base ignition set right? Have you checked for blockages ie broken up catalytic converter, rag in the intercooler? Are the cams in the right spot? Boost leak? Link to comment https://www.sau.com.au/forums/topic/130125-r32-gtr-gt2530s-dyno-results-lacking/#findComment-2423001 Share on other sites More sharing options...
Swiper the Fox Posted August 20, 2006 Share Posted August 20, 2006 we saw 404awkw (540awhp) on pump gas with a similar set-up and over 450awkw on race fuel...what total timing are you running?? with correct camshaft selection and tuning there is no reason why you shouldn't crack 350awkw (470awhp) Link to comment https://www.sau.com.au/forums/topic/130125-r32-gtr-gt2530s-dyno-results-lacking/#findComment-2423028 Share on other sites More sharing options...
Busky2k Posted August 20, 2006 Share Posted August 20, 2006 AFAIK Mustang Dyno's read pretty damn low? Link to comment https://www.sau.com.au/forums/topic/130125-r32-gtr-gt2530s-dyno-results-lacking/#findComment-2423040 Share on other sites More sharing options...
Swiper the Fox Posted August 20, 2006 Share Posted August 20, 2006 AFAIK Mustang Dyno's read pretty damn low? The 1/4 mile dyno didn't lie though 13.09 @ 105 MPH our car was the test car in HPI way back when it was bog stock and i think Ben Ellis managed to reel off back to back 12.9's Link to comment https://www.sau.com.au/forums/topic/130125-r32-gtr-gt2530s-dyno-results-lacking/#findComment-2423051 Share on other sites More sharing options...
berzerkled Posted August 20, 2006 Author Share Posted August 20, 2006 we saw 404awkw (540awhp) on pump gas with a similar set-up and over 450awkw on race fuel...what total timing are you running?? with correct camshaft selection and tuning there is no reason why you shouldn't crack 350awkw (470awhp) I'm on stock cams and cam gears. I know that will slow spool but it shouldn't be nearly this bad. The 1/4 mile dyno didn't lie though 13.09 @ 105 MPHour car was the test car in HPI way back when it was bog stock and i think Ben Ellis managed to reel off back to back 12.9's I had another GTR last year and pulled nearly the same time as this one..which has the hks 2530s.. this doesn't add up. Link to comment https://www.sau.com.au/forums/topic/130125-r32-gtr-gt2530s-dyno-results-lacking/#findComment-2423057 Share on other sites More sharing options...
rb26s13 Posted August 20, 2006 Share Posted August 20, 2006 i'd say its all in the tune.. or blocked exhaust or something alone those lines Link to comment https://www.sau.com.au/forums/topic/130125-r32-gtr-gt2530s-dyno-results-lacking/#findComment-2423182 Share on other sites More sharing options...
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