What to Do with my 2002?

[blue2000s]

Originally Posted by Adam

Agree, but sometimes the factory purposely holds a car back. The boxster S could've had 280 hp from the get go instead of 250hp but Porsche wanted to bump up the power of the 996 first. The car got a 30 hp bump and they didn't even need to up the displacement. That tells me some of these engines have some untapped potential.

It may not (and probably isn't) tappable without changes to cam timing (as the later engines have with lift), port, cylinder and head design and all kinds of external engine stuff as well. Expecting the simple intake, exhaust and chipping to make anything more than a modest increase in power (at the expense of tolerance to bad gas or excessive thrashing) isn't realistic.

[Adam]

Originally Posted by blue2000s

It may not (and probably isn't) tappable without changes to cam timing (as the later engines have with lift), port, cylinder and head design and all kinds of external engine stuff as well. Expecting the simple intake, exhaust and chipping to make anything more than a modest increase in power (at the expense of tolerance to bad gas or excessive thrashing) isn't realistic.

No, I believe the engine was held back and the statistics prove it. The 2000 3.4L 996 engine has 88hp/liter while the 2000 boxster S only has 78hp/liter. These engines are based on the same technology and time period. There is no doubt advances have helped both the 911 and the boxster but there's no disputing Porsche has always sandbagged the boxster. They won't even give the car a limited slip....

[blue2000s]

Originally Posted by Adam

No, I believe the engine was held back and the statistics prove it. The 2000 3.4L 996 engine has 88hp/liter while the 2000 boxster S only has 78hp/liter. These engines are based on the same technology and time period. There is no doubt advances have helped both the 911 and the boxster but there's no disputing Porsche has always sandbagged the boxster. They won't even give the car a limited slip....

What I'm saying is that the 250hp 3.2 from 00-02 and the 280hp 3.2 from 05-06 probably have different internal components that allow for the difference and if you want the early engine to match the output of the later, it's going to take more than simple bolt-ons and an ecu tune.

Did Porsche mean for the Boxster to always have a lower output than the 911? Of course.

[Adam]

Originally Posted by blue2000s

What I'm saying is that the 250hp 3.2 from 00-02 and the 280hp 3.2 from 05-06 probably have different internal components that allow for the difference and if you want the early engine to match the output of the later, it's going to take more than simple bolt-ons and an ecu tune.

Did Porsche mean for the Boxster to always have a lower output than the 911? Of course.

My point was that Porsche could've easily given the boxster S 280+ hp in 2000 without the high tech stuff like variable valve lift, etc etc. In fact I think the 280 hp 05-06 boxster S's don't even have variable valve lift or any cylinder head redesign over the older boxster S's. I read somwhere that the increase was due to the use of headers with equal length runners, bigger higher flow intake and newer 7.8.8 Bosch ECM. Basically, chip intake and exhaust.

[blue2000s]

Originally Posted by Adam

My point was that Porsche could've easily given the boxster S 280+ hp in 2000 without the high tech stuff like variable valve lift, etc etc. In fact I think the 280 hp 05-06 boxster S's don't even have variable valve lift or any cylinder head redesign over the older boxster S's. I read somwhere that the increase was due to the use of headers with equal length runners, bigger higher flow intake and newer 7.8.8 Bosch ECM. Basically, chip intake and exhaust.

If anyone on the board can show a 30 hp increase with external mods, I'd like to see it.

[edevlin]

I am still in process with the mods on my 2.7L 2000 Boxster. I am currently using a stock muffler with TTP headers and high-flow cats. I suspect the stock muffler is somewhat of a bottleneck for the exhaust gas, so I am going to try sticking on a Dansk Sport muffler in the next couple weeks. I should add that I have also stuck on a TTP intake and chip. The chip is also still in process, as it has not been completely tweeked to the exhaust rig as yet.

Anyway, I am now pretty consistantly getting around 202 hp on the DynoJet dyno which works out to a little over 20 additional hp at the crank, figuring a 15% drive train loss. I think it was racertroy that found he was getting a 17.8% drivetrain loss with his 2000 2.7L Boxster. Assuming a 17.8% drivetrain loss, that would put almost 29 additional HP at the crank. My guess is that with my car with a new muffler and the chip dialed into my setup I will end up getting in the neighborhood of 206-210 or so HP on the dyno, which is pretty close to a 30 hp increase. But don't even ask what all this mod playing around costs, for what by most standards is a very modest increase in HP, but hey, I'm having fun.......

Ed

:dance: :dance: :dance:

[blue2000s]

Originally Posted by edevlin

I am still in process with the mods on my 2.7L 2000 Boxster. I am currently using a stock muffler with TTP headers and high-flow cats. I suspect the stock muffler is somewhat of a bottleneck for the exhaust gas, so I am going to try sticking on a Dansk Sport muffler in the next couple weeks. I should add that I have also stuck on a TTP intake and chip. The chip is also still in process, as it has not been completely tweeked to the exhaust rig as yet.

Anyway, I am now pretty consistantly getting around 202 hp on the DynoJet dyno which works out to a little over 20 additional hp at the crank, figuring a 15% drive train loss. I think it was racertroy that found he was getting a 17.8% drivetrain loss with his 2000 2.7L Boxster. Assuming a 17.8% drivetrain loss, that would put almost 29 additional HP at the crank. My guess is that with my car with a new muffler and the chip dialed into my setup I will end up getting in the neighborhood of 206-210 or so HP on the dyno, which is pretty close to a 30 hp increase. But don't even ask what all this mod playing around costs, for what by most standards is a very modest increase in HP, but hey, I'm having fun.......

Ed

:dance: :dance: :dance:

How much were you making before the mods? You've gotta have a baseline right?

[z12358]

Adam:
"Agree, but sometimes the factory purposely holds a car back. The boxster S could've had 280 hp from the get go instead of 250hp but Porsche wanted to bump up the power of the 996 first. The car got a 30 hp bump and they didn't even need to up the displacement. That tells me some of these engines have some untapped potential."

We will never know for sure what went into making those decisions. We can only guess, and that involves risk. Even if the untapped potential was really there, tapping it without the design process employed by the factory (design, test, re-design, test, on the car as a whole etc.) adds another layer of risk. My point was that these risks can be seen as costs and as such they are usually underestimated.

Z.

[blinkwatt]

@ yellowporscheman

You have a 00'+ so that means you have 4 cats. You can get secondary cat bypass pipes for $500,gain 9hp and shed 30lbs.
http://www.epiqautosport.com/pro_boxster_secondary_catalytic_bypass_pipes.php

Then you could do the intake. Gain 8-10hp for $400. Easy D.I.Y.
http://www.epiqautosport.com/pro_boxster_fabspeed_high_performance_air_intake.p hp

The jury is still out on this one,Che's(Board Sponsor) 00'+ headers. I have only read on review w/o a dyno graph for 00'+,gain 6hp. $470

Now with novice mechanic skills you could do all those in your garage in a day and give some "S" a run for their money. Oh yeah and with the money you save from installing the parts yourself you could put in RoW sway bars!

Why not head to the track and see if you can handle the power in turns? Everyone that I know that tracks their Boxster doesn't complain about the power,it's more then enough to have fun in turns!