V

Being somewhat of a newbie on the 993TT forum, I have some simple questions.. Searched around a bit with no luck.

Basically, the stadard ROW spec was 408bhp.
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Then there is the "X50" option, which means 430bhp. (WLS I)
This kit includes:

-Turbo "S" auxiliary oil cooler kit
-430HP ECU

Can be bought through Gert:
http://www.carnewal-europe.com/cpx_p93028.htm for 5.500euro
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Finally the WLS II, or 450bhp factory powerkit.
This kit includes:

XE7 - Extra oil cooler (Turbo "S" auxiliary oil cooler kit) same as in the 430bhp package above.

XLB - Twin pipe exhaust (Turbo S tail pipes)

XLC - K24 Turbos

And a 450bhp ECU that replaces the standard ECU.

Can be bought through Gert:
http://www.carnewal-europe.com/cpx_p93029.htm for 6.000euro
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Now to the questions:

1. If you have a standard TT (408bhp), is there any reason NOT to go with the 450bhp kit (6.000euro), over the 430 bhp kit (5500euro)? Seems like the extra 500 euro is worth it?

2. If you already have the X50 option (430bhp kit), what would have to buy to get to WLS II (450bhp). Judging from the description above I assume that you will need K24 turbos and a 450bhp ECU. But then: Can the 430bhp ECU be reprogrammed to 450bhp, or does the 450bhp ECU replace the 430bhp ECU. If yes, is there a market for used 430bhp ECUs?

To sum up, starting from 408bhp, the 450 kit seems like a no-brainer (assuming factory parts only). Here the cost to go from 430bhp to 450bhp is only 500euro whereas if you start off with 430bhp, the cost to go to 450bhp is closer to 4.000euro (K24's + 450bhp ECU).

I assume that ALL ROW 993TT engines are the same and that the only thing that is different are the turbos, the oil cooler and the ECU between 408/430/450. Am I right?

Thanks in advance

pmf

Viggo,

The difference between the 430 power kit to 450 power kit is the release of power and lag.
I personally prefer the 430, even if less powerful.

To go from 408 to 430 and then from 430 to 450 is silly from a costs standpoint, so my advice is to try find a test drive of the two before deciding which power curve you are most confortable with.

By the way the standard X50 kit includes bigger oval tailpipes than 408, which I don't see in Gert's photo.

Bye,
pmf

WHB Porsche

The only sacrifice with the 450 kit is increased turbo lag due to the larger K24 turbos. The 450 kit has better PEAK power, but the 430 might be more driveable.

V

Thanks for your imput guys.. So the 430bhp configuration os more responsive? What is the difference (roughly) when: 0-60mph and 0-180mph? Not much difference at all? Anyone know if the 430hp ECU can be reprogrammed to be a 450hp ECU?

Thus what you guys are saying is that if you are fortunate to have a TT with the 430bhp powerkit, then there's not much point in upgrading to 450bhp? And furthermore if you have the stadard config of 408bhp then you would rather goto 430bhp instead of 450bhp, even if it costs about the same?

TIA

Felix

Can't give you exact perf numbers but 0-60 times won't be hugely different. However, the 0-180 mph times will be! And yes, the 430 ECU can be reprogrammed, as can any 993tt ECU.

430 to 440 hp is the reasonable maximum you can extract out of the K16 turbos. The 450 kit has more lag as supplied by Porsche but can be reprogrammed to reduce the lag and up the power as well. 480-490 should be achievable.

It depends on how much you wish to spend and how much power you want.

And if the 450 kit is of interest double check with Gert and/or your local Porsche dealer on the pricing. Last year they were available for about €4500 plus VAT and duty, as applicable.

TB993tt

If you search under my name; TB993tt - posts started, I copied the road test for a UK version 450PS 993ttS which has some good data including 0-150mph. I am on dial up (feels like it) so cannot spend the time looking for it

bb993tt

Viggo,

My experience with the 450 hp kit is that lag is a problem, and it's easy to blame the K24's. But it's really an ecu issue. As Felix says, above, this can be reprogrammed. Manthey did mine and a 5 bar fuel pressure regulator was added. Not only is the result in the 480 hp range, but lag is down considerably and responsiveness is up. I don't really know if this is the most cost effective way to go, however, if you're starting with the 408 hp motor.

V

So ALL the 993TT ECUs are reprogrammable? But at what cost? So the standard 408bhp ECU can be turned into a 430 or 450bhp ECU?
In that case, starting from 408bhp either:

- Add the Turbo-S oil cooler kit and reprogram the ECU -> 430bhp

or

- Add the Turbo-S oil cooler kit, buy the KKK K24's and reprogram the ECU -> 450bhp

I bet the ECU alone is like 3.000euro as a factory part? Dang..

How much do Manthey (or any other independant Porsche specialist for that matter) charge for a flash/tweak like the one you did? Ballpark cost?

Thanks all.

race.it

when I read this thread thats the same question I was going to ask as my car already has the 450 from the factory, I would think they would also look over the engine a little first to ensure that its sound.

R2FU

Hi there - I'm new here so apologies if this is a dumb question - there have been a couple of references in this thread to a factory 450 upgrade, I didn't think you could get 450 from the factory on a 'regular' 993TT? Thought 450 was only available on ROW Turbo S's or the road version of the GT2 Evo, both of which have K24 turbos as a starting point? Or as an aftermarket kit? Am I missing something?
Chris

race.it

hi, mine is a 98 german spec car and it has the optional 450 spec on it, from what I have found out this was only offered in a few markets, as mine is from Germany originally, i think then its possible to of got it from there as new.

I have seen a few others, but they have all been german cars (they are quite rare)

V

This option was available for some of the last ROW 993TTs entering the production line. A few of them are here on RL. Click the link in my first post to get to one source who is selling these kits. All factory parts.

chris walrod

So, these factory optioned higher power output were shipped to the states? If so, what is the option code or how does one identify a car as having such an option?

A guy's gotta dream, ya know

WHB Porsche

I'm pretty sure the 450 was NOT offered in the good ole' US of A.

Felix

I think the only factory installed power upgrade for the US market necessitated buying a Turbo S along with it and that got you the 430 ECU (422 hp SAE?).

The upgrades listed in the first thread were also available as dealer installed options.