hypergear
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Everything posted by hypergear
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Or you can run a very strong actuator.
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^^^^^ Yes Well I'm not a computer gig, I've emailed you all the issues I've experienced as a user, I guess trent will be happy to go into details when he's free. I'm in the process of getting a LinkG4 will post up some feedbacks once they are installed and tuned. -
He did say he will never do another one. Do makes sense after all those stuffing around and no results. Talk to him nicely and see what he says.
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I always get data corruption issues on the test car, and with the new illustration car it does all sort of random strange things and knock map is not responding to the tune. The test car goes onto the dyno every week so the data in it gets changed quite so often, I'm not sure if that causes the issue. I believe the boards or what ever the ecu its originally made for is ok. The Z32 ECU and nistune chip on R33GTST just didn't work probably on my cars. Which it's also the reason trent stopped doing those.
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Probably want some thing knocks less on high boost. Also For people who's thinking doing Z32 ECU with Nistune on R33. Don't do it. I'm having so much trouble getting it to work, they are unreliable, and many areas that can’t be touched. Big thanks Trent's spent 6 hours tuning and try to fix it and it just don't work. I'm thinking of modding the illustration car back to stock or going for a PFC or Link ecu for my next run.
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First of all turbos are different with unique wheel design as well as housing and gate sizes. Means the back pressure in them are not the same. So high pressure actuator only means it hold certain pressure on the turbo that has been specifically made for, refer to what I was originally asked to build. If you run an actuator from a different turbo to on some thing else obviously its going to give different readings. Eg. If I run an actuator that made to hold 18psi on a .58 rear housing, then that actuator will hold 24psi on a .82 rear housing. As the back pressure from the .58 is lot greater then the .82. Only means its not the correct part, does not mean its bad quality. That is why I asked you to keep the original actuator I've tested and supplied with the turbo, or buy it back from my self. Have a look at my boost pressure curve for the SS2, that is a perfect actuator for that turbo. In terms of High pressure actuators we have 4 different spring settings so I guess you've fitted the strongest one by luck, same as what I've fitted on the SS1-PU.
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Rb25 Turbo Upgrade, All Dyno Results
hypergear replied to Nacho Vidal's topic in Engines & Forced Induction
93 R33 GTST Rb25det with forged pistons (factory compression) and stock every thing else. 550cc injectors Z32 AFM HyperGear ATR43SS-1PU turbocharger 3inch turbo back exhaust Ebay cooler Nistune chipped ecu Here's update with the SS1 PU prototype. 291rwkws@21psi (run was not complete as cooler pipe slipped) when the cooler is cold and average of 270rwkws@21psi when the cooler is hot, 260rwkws@14psi. Runs were done on 14psi (red) and 24psi (yellow/Blue) high pressure actuators. No boost controller was used on those runs. This turbo was not equipped with a gate controller. 9 sec ramp: -
^^ They are in page 73 cheers
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I think Trent got mixed up with the models, I believe he was referring to the G1 or the original SS1PU with small housing. Also you need to refer to the yellow boost line, the red one opened too earliy without boost controller. This one's making 20psi by 3350 which is about the same to the SS1's response on my original read out. Its drives like SS1 that makes more power and torque. This one didn't have wastegate controller in the design, I sort wanted it to bleed down as it loses heat that way.
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Different dyno read differently.
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Yes that was correct, and it was very quite on the head phone (detonation detector). The engine and turbo were very happy today.
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Here's update with the SS1 PU prototype. My car's came with an ebay cooler which was getting cooked on the dyno. It maxed 291rwkws (was not complete as cooler pipe slipped) when the cooler is cold and average of 270rwkws when the cooler is hot. I had 2x actuators today, one is 14psi and the other was high pressure that peaked 25psi. No boost controller was used on those runs. This turbo was not equipped with a gate controller. 9 sec ramp: Its pretty happy on the dyno, made power pretty easily, and very good to drive on road. It makes 220rwkws @ 4000RPMs with the best run and 210rwkws @ 4000 on the average run. Compare to the previous run it have lost 450RPMs making 20psi by 3350RPMs. But picked up lot more mid range and top end, which is pretty worth it. I'm pretty happy with how it overally performed. I will probably going to give it another run with a better cooler.
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I can make them that way if any one wants one, but not really interested in building and selling them as a product as the SS-1 has out performed above in pretty much all accounts. Here are some results form the ATR43G1 unit. The peak was 232.9rwkws at 18psi. Turbo makes 20psi by 3000RPM. It has dropped to about 14psi up top, that’s because the comp wheel isn’t big enough to keep up with the flow up. That is the behavior of this turbo. On the road it is super fast and responsive. This turbo is good for some one who's looking for 200~230rwkws running on stock injectors and AFM. This turbo should also be excellent on Rb20dets.
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Made a bigger housing for it this weekend. The test car's currently got a G1 on it, need to test that first. will swap it over when I have a chance.
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Any one's got a dyno sheet of a evo including torque curve? If there's a turbo that has similar or better downlow torque then a evo then there might be a chance of beating it. Any way, ATR43G1 is in the test car now. Super responsive. Should give it a new name: DDT. Standing for Dose dynamic turbochargers (that came from Trent ). instant boost, makes lots of sucking, splatering and dosing sound, kept the BOV very busy. expecting 230rwkws with stock or better response. will post result soon.
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Its actually drawn very accurately measured by dots in percentage of the actual reading from graphs earlier, you can work it backwards to get the actual reading from the dynosheet. This prototype is losing torque for better response and drivability, that still needs more work done at this stage, the final version should handle around 280rwkws mark. SS1 should be good for about 250rwkws comfortably on the R34 with supporting mods.
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I've done a Radar graph (or what ever its called) to show the trade offs between power, torque, response and drivability. I believe this is more meaningful. Overlaid results are from: Standard turbo (some parts are estimated ie. Boost VS RPM on 20psi) ATR43G3 None FNT (I had a blocked cat on that run so it’s bit under powered) ATR43SS-1 ATR43SS-1 prototype. ATR43SS-2 Which demonstrates areas had to be sacrificed to gain in other areas. The goal would be minimum sacrifice for maximum gain. We can see some combinations are more extreme in certain areas then others. So depending on the most importance to driver’s preferences. Its also interesting to see the SS-2 is more of a perfectly balanced turbo in every way. Note. Testing platform, Dyno brand, software and ramp speed must be identical or it won't make any sense. Any one knows how to do this in excel?
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er.. Actually your run was done on a 12 sec ramp making a fair comparison with that stock turbo's reading on the same ramp timing. Mine is based on 9sec ramp. Compare to my original SS1 reading on the same ramp timing the prototype is about 500RPMs more advanced in response as well as torque，making it more responsive then a factory turbo. Come pass and test drive it when you free, totally unique driving experience. Also it’s interesting that no one have ever ordered an ATR43G1. That is a 2530 equivalent turbo designed to max with stock injectors and AFM. Since its going to take about a week on bits and pieces for the prototype, I'll be building one for my self for a power run, should do 230rwkws with stockish response.
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Both SS2 and G3 are tested on the same platform and the SS2 performed better and it is truly more responsive to drive on road. The original design goal is some thing has excellent driving ability while still have the max power out put as the G3. It’s also the fist turbo with FNT integration. That worked really well. Apart from focusing on its response and peak power, notice its torque, of how its wide and spread, that is the most important factor in creating excellent driving ability. It did cost more that is due to 4 extra machine hours. I believe The ATR43SS-2 is the ultimate choice for responsive 400rwhp with the best driving ability. On the other hand Alfa versions took over a year and thousands of dollars to get all facts right, It is a mascot of advanced engineering. How ever I never indented to sale it. Reason been is it failed to prove much differences in response to traditional bush bearing. The opposing energy slowing down shaft speed is surge pressure. Effect from rolling object is minimum. Plus the cost and time involved making it for us is impossible to market. I believe the rear housing is too small or the comp wheel is too big, its showing its too hot. How ever the response and how it takes off is amazing, I would like to keep the current turbine setup and trim down the comp wheel size to make it work. I'm also in the process of building a slightly larger turbine housing to suit its current CHRA. That should work out pretty well too.
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yes they starts with .84 rear. Also I'm really happy with the how the current prototype behaved down low, I will draw a small comp wheel profile to be cut suiting that turbine setup, which should still get me the same sort of response and down low torque with more mid range for 250rwkws.
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Thats in page 57. That was with a .63 OP6 rear. Its going to be super laggy with .82 rear, and its about the limit for that comp wheel too. Might want to try those billet wheels I've made for the G3 Alfa version which made 335rwkws on 21psi, which I don't think stock manifold can flow much more either.
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Yea. That was a special high flow that we've did to test out the max amount that I can flow out of a .63 rear housing and it made 345rwkws on 28psi still claming, it didn't get hot or any thing. We ended up with 321rwkws out of that on 20psi. That custom high flow is a bigger turbo then the SS-2.
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Rb25 Turbo Upgrade, All Dyno Results
hypergear replied to Nacho Vidal's topic in Engines & Forced Induction
93 R33 GTST Rb25det with forged pistons (factory compression) and stock every thing else. 550cc injectors Z32 AFM HyperGear ATR43SSxx Work in progress Prototype turbocharger 3inch turbo back exhaust Ebay cooler Nistune chipped ecu 264.2rwkws at 22psi. Full boost by 2900rpms. Super responsive. Below is based on 9 second dyno ramp. -
Every single standard high flowed units has a G2 CHRA in it. Every one whom tuned it have managed to make powere even using 21U turbine housing stock injectors and AFM. There are more then enough results from various tuners and cars from various states to prove they've made "at least 200rwkws". Just because he's the only person whom can't tune the power out of it, does not mean every one whom owns this turbo and made the power is BS. But having said that thats assume every thing on your car is 100% normal. I still got that 345rwkws high flowed turbo sitting on the shelf if you want to swap and give it a shot, I'm just going to have a laugh if he still can't make any thing above 200rwkws with that.
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Yes Got some interesting result today. It archeived some of the design goals but all of them. It did make 20psi by 2900RPMs and maxing out 264rwkws on a 9 sec Ramp which is super responsive. (Note: Thats not a high comp engine running cam gears.) The torque also came in very early and held ok through out the rev rang, which made the car felt very and good at taking off. So I'm still 16KWs short from my goal of 280rwkws and its lost some mid range from 4000 to 5000RPMs compare to the SS-1 which is likely from heat. I think the rear housing is abit small for the new CHRA, I will be up sizing the turbine housing hopping to gain some more mid and top range. So more evaluation and testing to come. Dyno run is based on 9 Sec ramp
