10-13-2019, 10:35 PM | #211 | |
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I wanted to have drift office tune my car but they refuse to tune sprintex sc. still been happy with my e-tune though. But definitely a reputable shop for this platform and should be able to really dial in not only WOT but drive ability. |
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10-14-2019, 12:08 AM | #212 | |
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any other lubricate used while u r install it? and how much oil u add in to the engine ? do we really need to take off the headlight? i got same thing, the user manual saw bit less in detail
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10-14-2019, 04:13 PM | #213 | |
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Definitely need to remove the headlight to fit the hoses through. |
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10-17-2019, 12:38 PM | #214 |
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Quick update. I'm working with Bob at @Drift-Office to schedule a proper dyno tune. Really excited to improve the drivability and finally have some peace of mind. I'm hoping to also have them double check my JRSC install to just make sure everything is still looking good. Looking forward to sharing the results.
I've also placed an order for STi motor mounts, Whiteline subframe bushings, and Whiteline diff inserts. I've had the Whiteline transmission mount installed for almost two years and have been meaning to complete the story for a while. Since this car is still used on the street, I opted for a less-than-hardcore mount setup than I might have otherwise picked. If this was a trailered track car, I'd go straight for the Cusco stuff. While I'm excited about having a more direct feel in the drivetrain, I'm also trying to kill two birds with one stone since my A350 is hitting the subframe under load. Not a fun sound to hear when blipping for downshifts. As soon as I can find a second hood, I'll pick up some Trackspec hood vents to use during the track season. I want to make sure the car is rock solid reliable, running cool, and is relatively worry-free next season. I spent too much time this past season fixing exhaust leaks in the pits and fighting overheating issues and too little time working on my actual driving. Totally takes the fun out of track days when you're worried about the car in every session. Last edited by mistople; 10-17-2019 at 12:51 PM. |
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10-17-2019, 03:56 PM | #215 |
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10-17-2019, 10:35 PM | #216 |
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11-08-2019, 12:38 AM | #217 |
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JRSC Dyno Results
Last week I took the BRZ down to Drift Office to get a long overdue dyno tune. After a rather negative experience with the original DT tune, I decided to cut my losses and fork over the (not unsubstantial) cash to get it sorted once and for all.
Bill at Drift Office was super professional and took the time to learn about my car, what had been done to it, and any problems I've had or was currently having with it. Bob was out of town, so I didn't get a chance to meet him. But I was really impressed by the level of care they gave for a new customer. They certainly didn't give me the impression they were trying to make a quick buck. Bill did a baseline with existing DT tune before jumping in and working off their own files. I want to note clearly that I rolled back to a previous version of the DT tune months ago as some of the final revisions were just undrivable given the low rpm bucking that has plagued me since installing the kid. I'm sure had I continued to log and flash revisions from DT that their tune would have made more power than displayed below. A stock BRZ makes around 165whp on their Dynojet. I don't recall the exact peak torque numbers for their stock pulls, but that should give a general sense of the delta from stock. Here is the before an after. Blue is DT, Red is Drift Office While I expected slightly higher numbers (I've seen 285/220 on a stock header on this dyno), they don't really matter to me. It's not a competition car, and it feels plenty fast enough. My immediate impressions are that the car runs much smoother overall. It feels noticeably faster after 4000rpm. However, it feels somewhat slower from idle to 3000rpm as confirmed by the chart. It doesn't seem as urgent to get going anymore. Their FI tune comes with launch control with an option to raise and lower the limiter by 500rpm using the cruise control stalk. They also give you two "maps", one of which is normal, and the other is a pseudo-burble tune which I haven't played with much. It doesn't feel all that natural to me as the revs drop suddenly quickly when it pops/bangs. Now for the not so great part. The car still bucks under light throttle loads where the supercharger is just starting to suck in air. Bill told me this is a somewhat common occurrence with the kit. Although I couldn't feel it during the test drive down at the shop, it's clearly still happening. I can't blame Drift Office or Bill as the same issue has been present with both tuners. It could easily just be a mechanical issue that hasn't been diagnosed. At this point, I'm very seriously removing the kit and going back to the beautiful simplicity that was just the NA A350 setup. At a certain point one just has to cut their losses and go back to the tried and true. The bucking issue combined with the unexpected heat issues on track have somewhat dampened the whole FI experience. It's not fun to feel like you can't just totally beat on the car and to not really worry about things going wrong. There's also just something about the car that feels unnatural that I can't shake. It doesn't quite have the same throttle response, the same immediacy when heel-toeing or blipping the throttle. It's hard to explain. The speed and power are amazing, but the car's character changed in a way that hasn't sat well with me. I'm obviously a minority as most seem to be quite happy with their kits. For me, I think I was happier when the car was closer to stock with just headers, tune, and an oil cooler. I'll give it a few more days, but I may have a stock engine bay once again soon. |
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11-08-2019, 06:19 PM | #218 |
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That sucks.. but I really think for you to enjoy the car NA is the way to go and just your loss. As you said it's not a competition car and it's more about fun and putting down good lap times for your setup. Also it paves the way for you to sell the car and move on of need as you have talked about before. My innovate kit while not the best for the track drives perfect on the street. Super smooth and the car still feels na till the boost kicks in. Just feels like a 3L V6 with most of it's power up top.
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11-09-2019, 03:41 AM | #219 |
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I can't help but wonder if Jackson Racing should chime in. The hesitation/bucking under light throttle doesn't seem to be a common issue in the JRSC thread in the Forced Induction forum, correct? At least I've never heard/read about it before.
It would probably be a good idea to check in with Jackson Racing themselves and also with CSG Mike perhaps. |
11-09-2019, 08:14 AM | #220 | |
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Mistople, hope you don't take this wrong way but, imho, here is what I would do - remove the ACE header and go back to stock header - buy factory tune from JR - check and fix all boost and vacuum leaks, replace MAF with a brand new one - it should be so much better than the stock after these JRSC with stock header is so much better than NA with ACE header |
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11-09-2019, 05:06 PM | #221 | ||
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I'm not interested in going back to the stock header right now. I'd blow the cats on track in no time. I'm also not super excited about spending more money on this kit. Buying two tunes was painful enough. Anyway, I'm not making any knee jerk changes quite yet. I'll give the tune a bit more time—I recall that previous DT tunes had bucking/hesitation issues for a while and then they went away. All I know is that the car wasn't any less fun NA. The peace of mind from having a stock engine, fewer moving parts, and less heat can't be overlooked on a tracked car either. |
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11-09-2019, 06:18 PM | #222 | |
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03-16-2020, 02:04 AM | #223 |
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I took the car for one final supercharged drive today and dropped it off at Chase Race to have the JRSC removed. No time to do it myself with everything going on.
I think I've said enough about it my likes/dislikes of the kit, but I think in the end, even if I had gotten the oil/engine temps into a more comfortable range, I still preferred the NA experience with this car. I tried two tunes and numerous revisions, but I just never quite settled with how the throttle response felt and how I never felt like I could really wring the car by its neck. It's hard to explain. I guess it just didn't feel as happy to rev out with the SC. As a result, I wasn't having as much fun with the car, on and off the track. Again, YMMV. I wouldn't go FI again if I could go back in time. I'm also having the STi engine mounts and Whiteline subframe inserts + diff insert installed. I'm hoping it makes the rear end feel a bit more connected to the car. I've always felt a bit unsettled by the how the rear end reacts on the limit or when it steps out. Very curious to see if the subframe inserts in particular help with that given the many reviews I've read about them. I'm also having a steering rack dust boot replaced since a header leak from last season obliterated it among some other small fixes. What's next? I know I'll need some new rotors soon. Any suggestions on a new pad to try? I'm moving on from the Winmax W5. Just looking forward to seat time this year. And less time under the car in the pits First wash of the year! Excuse the crappy cell phone photo. |
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03-16-2020, 02:11 AM | #224 |
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jeeze. i need anew cell phone.
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