WOW!!! what a difference that made

[M9G]

Recently de-snorkeled my boxster and did the exhaust mod.

Today i fitted a K&N air filter and for the first time since i've had her i put some fuel in her, i put in super unleaded which is 97RON and put in the fuel tank some Redex fuel system cleaner.

OMG!!!!! what a difference now to when i first got her two weeks ago, theres a huge difference in acceleration and throttle response.

I would definately recommend this to anyone who hasnt already done it.

Anyway just thought i would share my excitement :-)

[blue62]

Placebo effect

[M9G]

Originally Posted by blue62

Placebo effect

Absolutely not at all.

For a start a performance filter and higher RON fuel is going to make a difference

Im quite a sceptic when it comes to free mods but im telling you its loads better

[99Roadster]

Originally Posted by M9G

Absolutely not at all.

For a start a performance filter and higher RON fuel is going to make a difference

Im quite a sceptic when it comes to free mods but im telling you its loads better

Sounds good M9G....Mine will arrive in a couple days and I will drive it awhile then do some easy mods to start with.

[particlewave]

It’s supposed to have 98 RON (93 AKI)...what did it have before?

[M9G]

Originally Posted by particlewave

It’s supposed to have 98 RON (93 AKI)...what did it have before?

We get unleaded which is 95 or super unleaded at 97 so im guessing what was in there before when I got it was 95 hence the big improvement

[particlewave]

I see. High flow filter helps, too. Just be careful if it’s oiled as the MAF easily fouls.

[M9G]

Originally Posted by particlewave

I see. High flow filter helps, too. Just be careful if it’s oiled as the MAF easily fouls.

OK cheers :-)

[Stl-986]

That filter did nothing to add any performance. All the mods you made wont make any changes to the way the car runs or drives, including the exhaust. Placebo effect completely.

[blue62]

Originally Posted by Stl-986

That filter did nothing to add any performance. All the mods you made wont make any changes to the way the car runs or drives, including the exhaust. Placebo effect completely.

As I stated in addition if it is an oil type air filter- as microscopic oil coated dirt particles begin to stick to the MAF it(the MAF) will give false readings and the engine will begin to run rich. And progressively get worse.

[M9G]

OK no probs, your entitled to your opinions but I've been driving mine for the last two weeks, you guys haven't. I've been driving and modding cars for over 30 years, believe me I know when a car feels different

Cheers

[maytag]

Originally Posted by M9G

OK no probs, your entitled to your opinions but I've been driving mine for the last two weeks, you guys haven't. I've been driving and modding cars for over 30 years, believe me I know when a car feels different



Cheers

Don't fret over the negative-nellies: they're everywhere.
Some people will try to diminish everything and anything, unless it's theirs. It's sad, really.

The point behind modifying a vehicle is to make it more to your own satisfaction. So nobody else's opinion needs to matter.

I bet the sound alone is worth the mods you've made. And for some of us, simply changing it from what every other stuff-shirt has, is a worthy end-goal.

Sent from my SM-G970U using Tapatalk

[KRAM36]

Originally Posted by M9G

OK no probs, your entitled to your opinions but I've been driving mine for the last two weeks, you guys haven't. I've been driving and modding cars for over 30 years, believe me I know when a car feels different

Cheers

I feel your pain and heard the "placebo effect" on here so many times. You're correct, you know your car and you know when you did something if it benefited it's performance. I've had my 2003 S since 2013 and it's my daily driver, matter of fact it's the only vehicle I own. So I know when I make a change and I feel a performance difference, good or bad, it's not a "placebo effect". Been modding cars many years myself, just a little over 30 years at that. Enjoy your performance gains!

[M9G]

Thanks for the positive guys. They are quick to jump in with the negativity but if they read it properly they would have seen not once have I quoted bhp/torque gains just quicker acceleration and better throttle response. Then in another coment said it was probably because of the higher rated fuel and performance filter.

This also is my daily driver so yeah I see differences when driving her.

Cheers guys :-)

[Zzorro]

Agree on not over oiling the K&N filter. Makes a mess of the TB and MAF. Previous owner did that to mine. I had to clean it all out and replace the MAF. That fixed CEL and performance issues. It works great now!

[Cunningr]

Originally Posted by M9G

OK no probs, your entitled to your opinions but I've been driving mine for the last two weeks, you guys haven't. I've been driving and modding cars for over 30 years, believe me I know when a car feels different

Cheers

I ran a k&n in my turbo mondeo and high octane petrol definately feel the difference.
My boxster i have kept the stock filter because i live in a dusty area and the oiling issue with the maf. I have a fvd exhaust and noticed a bit of performance also when i run better gas.

Been messing around with cars since I was 15 so 40 years, in all cases more air in, and more air out equals increased performance! The higher octane too. So I am sure you feel a boost!

[M9G]

Originally Posted by Cunningr

I ran a k&n in my turbo mondeo and high octane petrol definately feel the difference.
My boxster i have kept the stock filter because i live in a dusty area and the oiling issue with the maf. I have a fvd exhaust and noticed a bit of performance also when i run better gas.

Been messing around with cars since I was 15 so 40 years, in all cases more air in, and more air out equals increased performance! The higher octane too. So I am sure you feel a boost!

Thankyou, love Mondeos, been through all the ST's

[blue62]

[QUOTE=Cunningr;604197]I ran a k&n in my turbo mondeo and high octane petrol definately feel the difference.
My boxster i have kept the stock filter because i live in a dusty area and the oiling issue with the maf. I have a fvd exhaust and noticed a bit of performance also when i run better gas.

Been messing around with cars since I was 15 so 40 years, in all cases more air in, and more air out equals increased performance! The higher octane too. So I am sure you feel a boost! [/QU

Sorry more air in and more air out does not equal performance gains "in all cases"

[piper6909]

[QUOTE=blue62;604209]

Originally Posted by Cunningr

I ran a k&n in my turbo mondeo and high octane petrol definately feel the difference.
My boxster i have kept the stock filter because i live in a dusty area and the oiling issue with the maf. I have a fvd exhaust and noticed a bit of performance also when i run better gas.

Been messing around with cars since I was 15 so 40 years, in all cases more air in, and more air out equals increased performance! The higher octane too. So I am sure you feel a boost! [/QU

Sorry more air in and more air out does not equal performance gains "in all cases"

You can argue that eventually you'll have diminishing returns, but when does more air in and more air out NOT result in increased performance?

[blue62]

[QUOTE=piper6909;604213]

Originally Posted by blue62

You can argue that eventually you'll have diminishing returns, but when does more air in and more air out NOT result in increased performance?

well lets look at one possibility: more air in and more air out creates more heat: more heat "possibly" could create ping or pre detonation. Picked up by the knock sensor when read by the ECU the ECU will retard timing to eliminate knock. retarded timing=.loss of power

or lets say you port and polish your intake: In theory increases flow (more air in more air out). but if you eliminate to much of the turbulence (make the runners to smooth).
Fuel particles drop out of the air: you have more air (and fuel) coming in and going out but your fuel air ratio is all messed up and you get a performance loss.

The OP stated that "IN ALL CASES" more air in and more air out increases performance.
I am not trying to start an argument.
I point out that the statement is not true because:

Many young people with limited automotive knowledge get their ideas on how to mod their cars from forums just like this one. They read a thread that says more air in and more air out "in all cases" increases performance.

So They run out and buy something like a high flow air filter for a ridiculous price.
Slap it on the engine and think they have increased performance.
When in most cases they have added intake noise and nothing else.
Except a fouled MAF sensor that causes the engine to run rich equaling a loss in power. and possibly over time a plugged up catalytic converter.

Yes in theory more air (and fuel) in and more air out build power. But it is not that simple. And it is not true "in all cases"