86 951 Upgrade suggestions - Parts, Vendors & What Order
03-10-2011, 04:20 PM
#31
FWIW, I'm not interested in a LS swap. While I can understand the various benefits, i.e. weight, hp, availability to performance parts at lesser prices, etc. I have no interest in this. For me (don't flame me for this, it is simply my personal opinion) a Porsche with an LS is no longer a Porsche. It may well be a fun track car and work that purpose extremely well, maybe even better than the 951, but to me it's no longer a Porsche.
03-10-2011, 05:58 PM
#32
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It's not rocket science.
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Mike or Dave Lindsey
www.lindseyracing.com
U.S. 1-877-943-3565
Other 1-405-947-0137
Mike or Dave Lindsey
www.lindseyracing.com
U.S. 1-877-943-3565
Other 1-405-947-0137
03-10-2011, 06:42 PM
#33
Three Wheelin'
03-10-2011, 09:42 PM
#35
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OK, it seems there are many different opinions on this throughout the various threads. I thought I'd try to get some info and get it all in one place.
With that said.... I have an 86 951 and am interested in adding some upgrades for more engine HP. The car is stock with the exception of having an Authority Chip, a Lindsey Down Pipe and a custom exhaust of some type. And off-hand I couldn't tell you the size of the exhaust but it apears to be stock in size. It pulls very strong and everyone that has ridden with me or driven it has been pretty impressed with how strong it pulls. Particularly at the Mike High Altitude. Other facts: it has about 200K miles on it and the PO told me the entire top end had been rebuilt somewhere around 150 -160K miles. However I have no way to confirm that.
It is a daily driver and my track car. I'll willing to put up with some things, like I have delrin bushings all around, Koni adjustables f&r both cranked to full firm and plan on increasing the spring rates above stock, but I don't want to make it a poor DD.The objective being (and not in any particular order) increase HP, reduce lag (if possible) all while keeping it bullet-proof in regards to reliability.
So what would you do, in what order and from vendor(s).
Have at it guys. Can't wait to see what folks have to say.
With that said.... I have an 86 951 and am interested in adding some upgrades for more engine HP. The car is stock with the exception of having an Authority Chip, a Lindsey Down Pipe and a custom exhaust of some type. And off-hand I couldn't tell you the size of the exhaust but it apears to be stock in size. It pulls very strong and everyone that has ridden with me or driven it has been pretty impressed with how strong it pulls. Particularly at the Mike High Altitude. Other facts: it has about 200K miles on it and the PO told me the entire top end had been rebuilt somewhere around 150 -160K miles. However I have no way to confirm that.
It is a daily driver and my track car. I'll willing to put up with some things, like I have delrin bushings all around, Koni adjustables f&r both cranked to full firm and plan on increasing the spring rates above stock, but I don't want to make it a poor DD.The objective being (and not in any particular order) increase HP, reduce lag (if possible) all while keeping it bullet-proof in regards to reliability.
So what would you do, in what order and from vendor(s).
Have at it guys. Can't wait to see what folks have to say.
It SHOULD go like this.
1. What do you use the car for? Is it pure street, street and some track, mostly track?
2. Are you looking for big dyno/paper numbers or do you want driveability?
3. Handle absolutely all of the maintenance issues before spending a single penny on go-fast stuff.
Once you answer those questions firmly, THEN make a plan. Your research into go fast gear should actually begin at that point.
Don't get me wrong. We've all been right where you are now. Take a deep breath and then buy the gear that specifically matches your plan. I recommend trying to source everything from a single vendor, as a package.
Vitesse Racing, Lindsey Racing Speed Force Racing are the bigger suppliers. There are smaller, more specific vendors out there as well. For ease of planning and support, I'd probably stay with one of the three I listed.
Welcome to the board and have fun!
03-10-2011, 11:27 PM
#36
Race Car
You CANNOT do a proper MAF conversion without changing the actual STRATEGY inside the PCM (DME). The computer takes what is essentially a volume signal, and calculates mass from volume, temperature, and pressure. By merely changing a transfer function, you are still measuring mass, and your computer is still taking that signal, assuming it is volume, and manipulating it.
It may not be rocket science, but it is a whole lot more complicated than most people realize. Interestingly, all of the cars I did development work on professionally have more computing power than the Space Shuttle. So maybe it actually is more complicated than rocket science.......
03-11-2011, 12:48 AM
#37
Three Wheelin'
If all you are changing is a transfer function, then I am not the one who is not informed. Your website states that you kit includes: "QUAD-M 85mm Aluminum 4 Hot Wire Mass Air Flow (MAF) Meter Kit. Includes all plumbing, hoses, clamps, air filter, wiring pigtail, communication cable and instructions for a complete solution."
You CANNOT do a proper MAF conversion without changing the actual STRATEGY inside the PCM (DME). The computer takes what is essentially a volume signal, and calculates mass from volume, temperature, and pressure. By merely changing a transfer function, you are still measuring mass, and your computer is still taking that signal, assuming it is volume, and manipulating it.
It may not be rocket science, but it is a whole lot more complicated than most people realize. Interestingly, all of the cars I did development work on professionally have more computing power than the Space Shuttle. So maybe it actually is more complicated than rocket science.......
You CANNOT do a proper MAF conversion without changing the actual STRATEGY inside the PCM (DME). The computer takes what is essentially a volume signal, and calculates mass from volume, temperature, and pressure. By merely changing a transfer function, you are still measuring mass, and your computer is still taking that signal, assuming it is volume, and manipulating it.
It may not be rocket science, but it is a whole lot more complicated than most people realize. Interestingly, all of the cars I did development work on professionally have more computing power than the Space Shuttle. So maybe it actually is more complicated than rocket science.......
03-11-2011, 04:37 AM
#40
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the real reason you'd want to go with Miller's is this:
http://millerperformancecars.com/war-chip.html
http://millerperformancecars.com/war-chip.html
Unless you have a ton of basemaps it will require a very steep learning curve (and time with endless logging) to get it to run right not just WOT. You can count on your fingers how many on this board are capable to do this.
In the 951 world where agressive timing/boost, water/meth injection and modern billet wheel turbo technology is treated like witchcraft it will have a very limited future.
03-11-2011, 05:05 AM
#41
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someone lynch this man for speaking about such outlandish, sorcery!!
03-11-2011, 11:51 AM
#42
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@ehall
Street/Track with a reasonable balance between the two. For example I'm upgrading various parts of the suspension with delrin bushing but certainly don't want to go to spearical for obvious street reasons. Not looking for huge HP #'s. That said enough is never enough but I will not completely sracifice the DD aspect of the car. And of course I do the maintenance items before the go-gast goodies. For that matter I have been working on suspension before engine related go fast goodies
Street/Track with a reasonable balance between the two. For example I'm upgrading various parts of the suspension with delrin bushing but certainly don't want to go to spearical for obvious street reasons. Not looking for huge HP #'s. That said enough is never enough but I will not completely sracifice the DD aspect of the car. And of course I do the maintenance items before the go-gast goodies. For that matter I have been working on suspension before engine related go fast goodies
03-11-2011, 12:01 PM
#43
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@ehall
Street/Track with a reasonable balance between the two. For example I'm upgrading various parts of the suspension with delrin bushing but certainly don't want to go to spearical for obvious street reasons. Not looking for huge HP #'s. That said enough is never enough but I will not completely sracifice the DD aspect of the car. And of course I do the maintenance items before the go-gast goodies. For that matter I have been working on suspension before engine related go fast goodies
Street/Track with a reasonable balance between the two. For example I'm upgrading various parts of the suspension with delrin bushing but certainly don't want to go to spearical for obvious street reasons. Not looking for huge HP #'s. That said enough is never enough but I will not completely sracifice the DD aspect of the car. And of course I do the maintenance items before the go-gast goodies. For that matter I have been working on suspension before engine related go fast goodies
LR sells more hardware gear, as does SFR. Vittesse is still where I would immediately go for a turbo/software/maf kit.
