993TT - aftermarket intercooler questions
Discussion
So, anyone know if there'd be any benefit from sticking a larger intercooler on my 993tt without any other modifications?
What about if i changed the element for a BMC panel filter?
And got 100 cell race cats (or my cats rebuilt)?
And then a rolling road re-map (Colin)?
Help!
Oh, i should just mention that i'm talking about a Protomotive intercooler for a hell of a lot less than $4500 USD...
Bigger intercooler should help on the run down to Le Mans, non?
VS
:driving:
What about if i changed the element for a BMC panel filter?
And got 100 cell race cats (or my cats rebuilt)?
And then a rolling road re-map (Colin)?
Help!
Oh, i should just mention that i'm talking about a Protomotive intercooler for a hell of a lot less than $4500 USD...
Bigger intercooler should help on the run down to Le Mans, non?
VS
:driving:
The maths escapes me at the mo. but I think it works out at 1% increase in power for 10degC drop in intake temp.
Intercoolers are all about surface area, and if you were able to fit a core that is twice the size of your current core you'd gain about 20% better cooling which would translate into a couple of deg's of intake temps. That is assuming your extra core size isn't acting as a massive heat soak and actually increasing intake temps.
The reality is that you would notice absolutely no difference in day-day driving and really is not a great use of money at this stage....
Intercoolers are all about surface area, and if you were able to fit a core that is twice the size of your current core you'd gain about 20% better cooling which would translate into a couple of deg's of intake temps. That is assuming your extra core size isn't acting as a massive heat soak and actually increasing intake temps.
The reality is that you would notice absolutely no difference in day-day driving and really is not a great use of money at this stage....
993rsr said:
VS, new intercooler waste of money as no need for it unless you're pushing 600bhp. Exhausts, better sound but no bhp gain whatever people say.
Send it up to Ninemeister, he will get 480ish from is as is with just a re-map.
I'm not technical, but sports exhaust and K+N cone filter certainly made a difference to my 993TT, admittedly it had a factory engine 430bhp upgrade anyway, but after these mods it was definitely more powerful and sounded out of this world at full chat.
Guy who used to look after it for me before I had to sell it boo hoo(see profile) worked for porsche for 15 years and was a race mechanic for the works team at le mans for 5 yrs as well as Lister for two, so I guess he knows a thing or two. He reckons there is a gain from better breathing (exhaust and filter) but no where near the fanciful claims that some people make.
I know having spent the money I was looking for a difference, but throttle response and grunt all seemed slightly better. The difference was much more marked when I gave my 993 C4S the same treatment but I'm sure there is some technical reason between normally aspirated and turbocharged that accounts for that
IMHO
993rsr said:
480bhp max. from k16's which I presume you have on your car.
Er, yes, well...sort of, er, or a smokey 550?*
There is one significant advantage to having a larger intercooler and that is appearance: there's something Kremeresque about an industrial grade steel block, bursting through the louvres.
Nice to know that it might come in handy beyond 600bhp though.
* Btw, John, this seems to have cleared itself up, suddenly - went for a blast on Sunday night, fird it up, the thing fairly explodes into life with the usual Fug of The Somme and joyously, leaving it at idle with a few judicious prods, it was almost environmentally damaging, rather than murderous. Very odd.
I know I'm simple but I don't see how a rolling road session will prove anything as the test of an ICs efficiency is it's cooling ability under load on the road.
If you look on rennlist you'll find a guy who did some proper on the car testing with temperature sensors fitted before and after the IC.
Why don't you take it to ninemeister, give him your budget and see what he can do?
If you look on rennlist you'll find a guy who did some proper on the car testing with temperature sensors fitted before and after the IC.
Why don't you take it to ninemeister, give him your budget and see what he can do?
Ok, my last effort to save you money. I have just worked out that the actual figures are 1% HP gain for each 7degC drop in intake temps. You probaby have post turbo temps around 100degC, stock intercooler probably reduces that to around 45degc. If you then max the surface area of the core of the intercooler you'll get 20%(ish) better cooling. That will save you about (rounding up) 10degC, or a just over 1% (4bhp). Now even £500 seems a tad expensive....
Thanks guys, all good advice.
I don't think it's going to make much difference though as the guy selling the intercooler on ebay is marked as London but now says he lives in Cornwall.
Also, i want to pay cash when i have inspected it, so i want to collect from him, which he seems hesitant about...
Any alarm bells ringing yet?
Oh, and he was registered as a new user the day the auction started.
VS
I don't think it's going to make much difference though as the guy selling the intercooler on ebay is marked as London but now says he lives in Cornwall.
Also, i want to pay cash when i have inspected it, so i want to collect from him, which he seems hesitant about...
Any alarm bells ringing yet?
Oh, and he was registered as a new user the day the auction started.
VS
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