StevoD Posted May 14, 2018 Share Posted May 14, 2018 stop looking at the total number and look how much you've gained across the range 1 Quote Link to comment Share on other sites More sharing options...
burntorange Posted May 14, 2018 Share Posted May 14, 2018 I am happy with it....i have to say ive had a lot of fun with just the pops and bangs alone....makes traffic more interesting. I hear that HDev have recently made their dyno more conservative.....(probably more realistic) which will explain why i didnt miraculously start with 300hp on a DE Quote Link to comment Share on other sites More sharing options...
Bencs Posted May 27, 2018 Share Posted May 27, 2018 2006 DE (40k on the clock) borla TD exhaust HDev plenum High flow Cats (still trying to figure out which they are!) very happy with with the results - massive thanks to the guys at Horsham! 2 Quote Link to comment Share on other sites More sharing options...
Bakkums Posted September 28, 2018 Share Posted September 28, 2018 (edited) Hello, Been on the dyno today in the Netherlands. Engine vq35de non revup Mods: - Berk HFC - Circuit Werks Ypipe - Mishimoto filter box - plenum space Engine has run 200.000 kms and I have tuned the AFR with uprev myself. Eninge hp: 281 Engine NM: 320 (stock is 363 ) Dyno 350Z Edited September 28, 2018 by Bakkums Quote Link to comment Share on other sites More sharing options...
PPod Posted October 10, 2018 Share Posted October 10, 2018 (edited) On 28/09/2018 at 11:01, Bakkums said: Hello, Been on the dyno today in the Netherlands. Engine vq35de non revup Mods: - Berk HFC - Circuit Werks Ypipe - Mishimoto filter box - plenum space Engine has run 200.000 kms and I have tuned the AFR with uprev myself. Eninge hp: 281 Engine NM: 320 (stock is 363 ) Dyno 350Z Edited October 10, 2018 by PPod Quote Link to comment Share on other sites More sharing options...
Foo56 Posted October 17, 2018 Share Posted October 17, 2018 (edited) Took my '58 plate HR to Horsham on 16/10/18, was cool to see the process and would recommend them for sure. 55k on the clock, running Tesco momentum 99. I went to them with low expectations of getting no more than around 320 fwhp, was more after improving the drive, fueling and feel. Engine mods: Injen long tube CAI. DC sports SS exhaust manifolds. Torqen HFC. Custom cat back exhaust (Infinity exhaust in Bristol). Results: First dyno: 329.6 fwhp / 272.9 whp After map: 338.5 fwhp / 280.7 whp Really happy with that especially as I have been advised by a few people against the manifolds and CAI when I was doing my research pre-purchase - One of the highest HR's they had seen @H-Dev that's non FI apparently, and the drive is WAY smoother and more enjoyable now! Have also attached a picture showing the temperatures as I've been advised previously that long tube CAI suffer from heat soak (which is why I went for black Injen's over Stillen), but on this you can see (even just a fan in front of the car) that temperature on intakes is slightly lower than ambient, so actually driving this would be lower still. Edited October 17, 2018 by Foo56 typo 1 Quote Link to comment Share on other sites More sharing options...
VRRacing Posted December 10, 2018 Share Posted December 10, 2018 259whp (306bhp) 253ftlb JM Imports Dynojet syvec ecu v+ Plenum NWP Bigger TB K&N FILTER BERK HFCs Cobra back box Bumper vent R35 Injectors since this I’ve added Injen twin exhaust, I’ll be adding NOS and having the map tweaked at some point soon. Quote Link to comment Share on other sites More sharing options...
Judge Posted January 27, 2019 Share Posted January 27, 2019 (edited) 2008 350Z VQ35HR (34500 miles, FSH) Motordyne ART Pipes, Powerflow CBE, HKS Super Hybrid Panel Filters, UpRev Unknown Dyno @ TDI North 311 whp 250 ftlb Edited January 28, 2019 by Judge Quote Link to comment Share on other sites More sharing options...
Dave6188 Posted January 27, 2019 Share Posted January 27, 2019 2 hours ago, Judge said: 2008 350Z VQ35HR Motordyne ART Pipes, Powerflow CBE, HKS Super Hybrid Panel Filters Unknown Dyno @ TDI North 311 whp 250 ftlb Not sure if I am reading this wrong, says BHP on the graph which is measured at the flywheel not the wheels ! Why does the top end of the power and torque band peak and trough so much ? Quote Link to comment Share on other sites More sharing options...
Judge Posted January 28, 2019 Share Posted January 28, 2019 (edited) On 27/01/2019 at 15:47, Dave6188 said: Not sure if I am reading this wrong, says BHP on the graph which is measured at the flywheel not the wheels ! Why does the top end of the power and torque band peak and trough so much ? The HR has 306 bhp and 268 lbft stock. So assuming that dyno is accurate, those can't be flywheel figures because it would mean the modifications gained me 5 bhp and LOST 18 lbft. I've test driven several HRs with similar mileage and maintenance and mine is considerably quicker. So I'd say those are wheel figures but might be a bit optimistic. I have no idea about the weird peaks and troughs at the top end. It certainly doesn't drive like that! I just assumed it was a glitch with the dyno system so didn't ask the tuner. What I did ask was why the tuned peak figures were only 3 bhp and 4 lbft higher than pre-tuned. He said the gains were “subtle”. For £450 I'd say “disappointing” is a better description. But I did get some bottom end and mid range gains, the removal of the throttle response delay in the first three gears, and the slightly rich AFR was corrected. EDIT - Looking at this again, what also doesn't make sense is the speed shown at peak power. If it was 4th gear, how could it be 117mph at those revs? I have a stock final drive so the speed should have been ~127mph. Maybe it was a typo... Edited March 22, 2019 by Judge Quote Link to comment Share on other sites More sharing options...
Kryptek49 Posted January 28, 2019 Share Posted January 28, 2019 5 minutes ago, Judge said: The HR has 306 bhp and 268 lbft stock. So assuming that dyno is accurate, those can't be flywheel figures because it would mean the modifications gained me 5 bhp and LOST 18 lbft. I've test driven several HRs with similar mileage and maintenance and mine is considerably quicker. So I'd say those are wheel figures but might be a bit optimistic. I have no idea about the weird peaks and troughs at the top end. It certainly doesn't drive like that! I just assumed it was a glitch with the dyno system so didn't ask the tuner. What I did ask was why the tuned peak figures were only 3 bhp and 4 lbft higher than untuned. He said the gains were “subtle”. For £450 I'd say “disappointing” is a better description. Having said that, the bottom end and mid range gains are noticeable, as is the removal of the throttle response delay in the first three gears. He also corrected the slightly rich AFR. So overall I was / am happy. HR is 313BHP if I remember correctly. Per the Dyno sheet for my HR done at Abbey Motorsports with an UpRev & DeCats it was running at 297.2 WHP - around 337 at the fly according to Mark who works there. 311BHP is pretty high compared to stock, but wouldn't surprise me as being correct - all Dyno's vary slightly ayway Quote Link to comment Share on other sites More sharing options...
Judge Posted January 28, 2019 Share Posted January 28, 2019 9 minutes ago, Kryptek49 said: HR is 313BHP if I remember correctly. Per the Dyno sheet for my HR done at Abbey Motorsports with an UpRev & DeCats it was running at 297.2 WHP - around 337 at the fly according to Mark who works there. 311BHP is pretty high compared to stock, but wouldn't surprise me as being correct - all Dyno's vary slightly ayway It's 313 PS, which is 308 bhp. But I used the figures 306 bhp and 268 lbft as they're the ones most often used on various websites. If you still have a stock cat back exhaust then those figures sound about right to me. But as you say, all dynos vary. Quote Link to comment Share on other sites More sharing options...
RobPhoboS Posted January 28, 2019 Share Posted January 28, 2019 Manufacturers quote engine power, not engine power plus drive train losses. So 308 or whatever is the engine, not the power at the wheels. Quote Link to comment Share on other sites More sharing options...
Dave6188 Posted January 28, 2019 Share Posted January 28, 2019 2 hours ago, Judge said: The HR has 306 bhp and 268 lbft stock. So assuming that dyno is accurate, those can't be flywheel figures because it would mean the modifications gained me 5 bhp and LOST 18 lbft. I've test driven several HRs with similar mileage and maintenance and mine is considerably quicker. So I'd say those are wheel figures but might be a bit optimistic. I have no idea about the weird peaks and troughs at the top end. It certainly doesn't drive like that! I just assumed it was a glitch with the dyno system so didn't ask the tuner. What I did ask was why the tuned peak figures were only 3 bhp and 4 lbft higher than untuned. He said the gains were “subtle”. For £450 I'd say “disappointing” is a better description. Having said that, the bottom end and mid range gains are noticeable, as is the removal of the throttle response delay in the first three gears. He also corrected the slightly rich AFR. So overall I was / am happy. Works out at around 357bhp at the flywheel then, I'm going to guess it's a Dynojet going by those numbers Quote Link to comment Share on other sites More sharing options...
Judge Posted January 28, 2019 Share Posted January 28, 2019 42 minutes ago, RobPhoboS said: Manufacturers quote engine power, not engine power plus drive train losses. So 308 or whatever is the engine, not the power at the wheels. Quote Link to comment Share on other sites More sharing options...
Judge Posted January 28, 2019 Share Posted January 28, 2019 46 minutes ago, Dave6188 said: Works out at around 357bhp at the flywheel then, I'm going to guess it's a Dynojet going by those numbers I don't know much about dynos so I'll take your word for it. Quote Link to comment Share on other sites More sharing options...
evilscorp Posted January 28, 2019 Share Posted January 28, 2019 18mins to tune... wow... don't think I've ever been in and out that quick. DE's must suck as when mine was N/A I was lucky to get just above 290BHP, surprised HR's make that in WHP. Quote Link to comment Share on other sites More sharing options...
davey_83 Posted January 28, 2019 Share Posted January 28, 2019 Reads as a 4th gear pull also, irrc 5th is the preferred gear for Dyno runs?.... Quote Link to comment Share on other sites More sharing options...
Judge Posted January 29, 2019 Share Posted January 29, 2019 (edited) On 28/01/2019 at 22:07, evilscorp said: 18mins to tune... wow... don't think I've ever been in and out that quick. DE's must suck as when mine was N/A I was lucky to get just above 290BHP, surprised HR's make that in WHP. 18 minutes between runs 3 and 4, not 1 and 4. But it was still only about 1 1/2 hours total and I got charged for 3 hours which I'm not especially happy about. Edited February 24, 2019 by Judge Quote Link to comment Share on other sites More sharing options...
Judge Posted January 29, 2019 Share Posted January 29, 2019 10 hours ago, davey_83 said: Reads as a 4th gear pull also, irrc 5th is the preferred gear for Dyno runs?.... I asked about that as well and he said he didn't like doing runs in 5th because of the speed... 1 Quote Link to comment Share on other sites More sharing options...
davey_83 Posted January 29, 2019 Share Posted January 29, 2019 Pretty sure 5th is a better 1:1 ratio for the transmission. I'm not entirely sure what effect gear choice has on dyno pulls lb-ft figures Quote Link to comment Share on other sites More sharing options...
Judge Posted January 29, 2019 Share Posted January 29, 2019 17 minutes ago, davey_83 said: Pretty sure 5th is a better 1:1 ratio for the transmission. I'm not entirely sure what effect gear choice has on dyno pulls lb-ft figures You're right. I guess he didn't fancy doing ~160mph. If that was the case he should have asked me to drive it! 1 Quote Link to comment Share on other sites More sharing options...
VRRacing Posted February 5, 2019 Share Posted February 5, 2019 On 29/01/2019 at 12:11, Judge said: You're right. I guess he didn't fancy doing ~160mph. If that was the case he should have asked me to drive it! 4th is generally the preferred gear for power runs, usually the most direct ratio 1:1. Also the figures on the sheet are BHP, N/A cars are never going to yield fantastic gains, but making good your AFR is never going to be a bad thing, although it would have been nice and safe at the top end with that AFR. It’s also not beyond the realms of possibility that an inefficient hand built Power Flow exhaust could loose you power especially in the Y pipe. When i used to run a dyno we always had a “special” BMW M3 Mode because the average person would have been a little upset if a car left after a map only making “stock” power, the fact is they consistently made significantly less than BMW claimed as their figures were engine out of the car with a different intake and exhaust. BHP is basically a best guess and there are a few ways of calculating it. WHP is where it’s at, just not as good for the old pub talk. 1 Quote Link to comment Share on other sites More sharing options...
Mark@Abbey m/s Posted February 6, 2019 Share Posted February 6, 2019 All our dyno work is carried out in 4th gear. dyno is a tuning tool , before and after on the day is what counts. But I am afraid every one wants to say they have the most BHP so dyno plots get waved around then people says this cant be true. Quote Link to comment Share on other sites More sharing options...
Judge Posted February 6, 2019 Share Posted February 6, 2019 14 hours ago, VRRacing said: 4th is generally the preferred gear for power runs, usually the most direct ratio 1:1. Also the figures on the sheet are BHP, N/A cars are never going to yield fantastic gains, but making good your AFR is never going to be a bad thing, although it would have been nice and safe at the top end with that AFR. It’s also not beyond the realms of possibility that an inefficient hand built Power Flow exhaust could loose you power especially in the Y pipe. When i used to run a dyno we always had a “special” BMW M3 Mode because the average person would have been a little upset if a car left after a map only making “stock” power, the fact is they consistently made significantly less than BMW claimed as their figures were engine out of the car with a different intake and exhaust. BHP is basically a best guess and there are a few ways of calculating it. WHP is where it’s at, just not as good for the old pub talk. For the 6 speed manual 5th gear is the 1:1 ratio. I agree the Powerflow is possibly not the best CBE on the planet, but I doubt it has lost me the power and torque that the ART pipes gained me. So the results are either over-reading WHP or under-reading BHP. But either way they're probably not very accurate. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.