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Forced Induction Turbo, Supercharger, Methanol, Nitrous |
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08-31-2016, 09:20 PM | #1 |
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Need some sensible input... to FI or not
You can see the original post below quoted.
I think I'll limit the scope of my post. The main question I should have really asked is: can anyone tell me how much faster these supercharger kits are making the platform? I can't wrap my head around how much the figures are really increasing the speed of the car. Is there some comparison or numbers people can provide, other than the whp and tq graphs? I'd be willing to sacrifice some reliability if the increase is worth it. But that is really the underlying question. How much are people putting into it and how much work is it really in maintaining? Last edited by modbus; 08-31-2016 at 10:19 PM. |
08-31-2016, 09:49 PM | #2 | |
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What do you consider daily driving? Is it 20 miles a day or 200? This again makes a huge difference. How big a risk are you willing to take? Every change to a car increases the risk of failure. It does not mean it WILL fail but the risk goes up. The bigger the change the greater the risk. How much can you do yourself vs paying somebody else? The fact you said you would like to SC but stay on the factory tune would indicate that you may still have some learning to do. Even if you pay somebody to install a FI system and all the supporting mods you still will need to fully understand how it all works or will end up in trouble at some point. How big is your budget? Going FI is not as simple as slapping a $1,000 SC on and calling it a day. There are many supporting mods that you need to buy and maintain. It ain't cheap especially if you are going hunting WRXs. @RedFR-s can tell you all about the ups and downs of going FI. EDIT: Dude! The answers have not changed since you last asked the exact same question. http://www.ft86club.com/forums/showthread.php?t=90928
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08-31-2016, 10:31 PM | #3 |
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I'd just advise reading through the owners threads of which kits you want.
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08-31-2016, 10:31 PM | #4 | |
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So maybe the better question is... with provided tune and kit, what supporting mods should I also need? So I can understand how much money it would cost to realistically have a good setup knowing I don't want to get too crazy. I'm an engineer. I can read diagrams and schematics. I can do work and troubleshoot things. I *could* do it myself. If I need to understand what to look for or at when something goes wrong, I'm sure I could figure it out. So, how often do things go wrong then? This is exactly what has me worried, because I almost get the sense that you guys talk about it like it's weekly. |
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08-31-2016, 10:33 PM | #5 | |
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Are people mostly just doing ride alongs with those who went for a particular kit? |
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08-31-2016, 10:40 PM | #6 | |
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edit: I did drive a Focus ST and a GTI, but honestly, the FRS with a supercharger felt quicker to me.
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08-31-2016, 10:53 PM | #7 | |
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09-01-2016, 02:08 AM | #8 |
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I did once a test drive of the HKS supercharger. It was really fast. Especially more torque from low. The car pulled in the mountains even from 5th gear. It would not just keep up with a WRX, it would be faster. So, the feeling was very positive. If you want to get easy results and without much expenses, then FI is the way to go. However, you are losing other things and somehow it negates the real fun. Basically, focusing on yourself and on the driving technique and changing your car the hard way and make it faster while staying NA.
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09-01-2016, 03:07 AM | #9 | |
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09-01-2016, 04:07 AM | #10 | |
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Almost any SC you pick (with a proper tune) will make the 86 faster than a stock WRX. You don't "need" any supporting mods to achieve that. I was putting down a bit over 250whp with a c30 JRSC and no other supporting mods. You don't need an upgraded clutch at that level. It wasn't any extra work to maintain. Very minor things like checking the rotrex traction fluid level, belts and making sure clamps are still properly tightened. As far as "feel" goes... You'll just have to drive one and decide for yourself. It's easier for me to get a sense of how fast it is by reading a dyno graph than it is driving it. A SC'd 86 will probably feel underwhelming or not as fast compared to a WRX just due to the low end torque it has, but it's top end suffers whereas the SC is just starting to make most of its power.
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09-01-2016, 05:54 AM | #11 | |
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The experiences on here range from tens of thousands of trouble free miles to blew the engine on the dyno 15 minutes after completing the install and every conceivable condition in between. As I said before the modification of a car creates risk. The level of that risk can be mitigated to some extent but it remains elevated. Unfortunately the increase in risk to each individual set up is not measurable due to the number of variables so we can't assign a number and say "these are your odds". You have asked if you should go FI in the FI section of a car forum and the answers yet get are likely going to be biased towards "do it" since they accept the risk. You need to be very sure that you also accept it if you decide to go this route.
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09-01-2016, 05:56 AM | #12 |
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Nothing else at all? Completely stock car other than SC?
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09-01-2016, 07:01 AM | #13 |
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09-01-2016, 07:35 AM | #14 |
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Do you want more power or to just accelerate faster? If you get lighter wheels, flywheel, and carbon fiber driveshaft you will accelerate faster without the expense of FI. If you really want the extra power then as TCOAT said you really don't have any idea what your experience might be. It could be great or you could be the unlucky one that gets a blown engine within a few months for who knows why.
And modified cars become to do lists. Read through the experiences of these people, some talk about always carrying an extra supercharger belt in the trunk because they snap so often, others about constantly tracking down leaks and the like. If you daily your car a long way and really don't want to risk reliability FI might not be for you. |
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