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Discussion Starter #1 (Edited)
I took my friend's 2009 Elise S/C for a tune in my town. I was wondering if the tune is good or not ?
Mods:
1- Snorker is gone.
2- K&N filter.
3- Headers
4- Highflow cats with MIL Light Eliminator
5- Quick Siver Mufflers.
6- 92 octane gas.

Thank you,
Hazim
 

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That's not bad for a NA Elise with just a Headers replacement with those few extras.
 

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Did you just add that? I swear it was not there before. I thought the factory S/C put out more then that ( without the mods ), like 216 or so? This is the dyno result with the mods and a tune?
 

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Yes, I edited my post to make it clear.
The car comes with 220 hp stock.
just a hair under 220whp actually isn't bad for a stock tuned*/pulleyed Elise S/C with boltons (keep in mind the #'s Lotus claims don't take into account drivetrain loss which roughly estimates around 15%)

*note that just running the car on the dyno isn't really tuning anything either (without a proper flash or software for the ECU), rather just indicating power to the wheels

also, whats your elevation where the dyno was done? that makes a significant difference in final power #'s as well

That's not bad for a NA Elise with just a Headers replacement with those few extras.
for what its worth, no 2zz equipped car would ever see over 200whp with just boltons on a stock map
 

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(keep in mind the #'s Lotus claims don't take into account drivetrain loss which roughly estimates around 15%)
Wow I knew they were loose with their numbers but %15... sheesh.

I guess my Katana really is doing a nice job then.

note that just running the car on the dyno isn't really tuning anything either
Right that is why I asked that, did they really tune anything or just say that? A factory S/C from lotus is tuned right, sure you could get some tighter tuning but I dont think it would be worth the cost. If they are claiming they tuned for the headers, IMO it didn't help much, what ( 5hp? ). I'd like to see the run before and after the tune/bolt on, but that just me.
 

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That 15% number is completely normal Ulao, and not just a Lotus thing - I would expect a 220bhp car to show about 185-190whp... so those numbers seem to indicate he gained 10-15hp.

The Difference Between BHP And WHP Explained

That link provides a basic explanation of what you're looking at here. Bottom line, it sounds like he got a modest gain from the mods.

-M
 

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Oh ok, I thought driftwood meant 15% of what Lotus stats though yes I dint realize Lotus would not state wheel power and rather goes by BHP. Makes scene now, thx. I guess the "RWH" is what confused me. Is that short for rwhp?
 
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