$2 mod for SP, 157kw atw

Novice1 · Postby **Novice1** » Tue Nov 06, 2007 3:12 pm

Keep reading this in readers posts with SP, what is this $2 mod?

Cheers
Novice1 aka Ron

Boags · Postby **Boags** » Tue Nov 06, 2007 3:37 pm

Novice1 wrote:Keep reading this in readers posts with SP, what is this $2 mod?

Cheers
Novice1 aka Ron

Try here and more info here.

From the second thread:

I wrote:At the moment your turbo takes the boost reading for the actuator from the turbo side of the intercooler piping. This means that after the boost drop of the intercooler the manifold does not see the boost level for which the actuator is set.

By putting in a tee piece in a vac line from the manifold you can get the boost reading after the intercooler - and after the pressure drop. This reading will be 1-2 PSI lower than before the intercooler, so won't open the actuator until later. You are effectively upping the boost by 1-2 PSI, or whatever the pressure loss is across the intercooler. You are still technically running "stock boost" because you have not tampered with the actuator.

I hope that makes sense???

Boags

Go on, buy one!

Novice1 · Postby **Novice1** » Tue Nov 06, 2007 5:24 pm

Thanks Boags:
I, think what you said makes sense:)

Next SP that becomes available in QLD I will swoop like a peregrine falcon.

Cheers
Novice1 aka Ron

bigdog · Postby **bigdog** » Tue Nov 06, 2007 6:11 pm

Novice1 wrote:Thanks Boags:
I, think what you said makes sense:)

Next SP that becomes available in QLD I will swoop like a turkey buzzard!
Cheers
Novice1 aka Ron

I was on my way to look at mine within hours of it appearing here on the forum. Despite having to drive to Canberra to see it :lol:

Left a deposit with Tim's good lady and went back by train several days later to pick it up. The top down drive (in the rain) home again only cemented my love for the car. Don't hesitate Ron - there's always someone looking for a bargain.

Novice1 · Postby **Novice1** » Tue Nov 06, 2007 8:25 pm

bigdog wrote:
Novice1 wrote:Thanks Boags:
I, think what you said makes sense:)

Next SP that becomes available in QLD I will swoop like a turkey buzzard!
Cheers
Novice1 aka Ron

I was on my way to look at mine within hours of it appearing here on the forum. Despite having to drive to Canberra to see it Left a deposit with Tim's good lady and went back by train several days later to pick it up. The top down drive (in the rain) home again only cemented my love for the car. Don't hesitate Ron - there's always someone looking for a bargain.

You wont believe this but I actually have your car set as my desktop background .
Also, love the 1st black SP in the SP owners list thread.
CHeers
ROn

MX5-SP · Postby **MX5-SP** » Tue Nov 06, 2007 9:30 pm

157Kws for 2-bucks! ...are you kidding me? It's a hoax! ...I have it on good authority it only delivers 155Kws. ...if that! ...So what's the benefit?

:roll:

Boags · Postby **Boags** » Tue Nov 06, 2007 9:48 pm

@ Darby.

To be fair, not many owners see 157rwKW with the $2 mod. I think the gain is usually much more modest than that, but it does turn 125rwKW into 135rwKW IIRC.

As Darby said; why bother, I'd rather spend the $2 on a cheeseburger. :roll:

Benny · Postby **Benny** » Wed Nov 07, 2007 10:21 am

Why bother?
Because it's the best low-cost performance mod you can make to an SP!

It really makes a difference that you can feel from the seat of your pants, however, there are a couple of slight downsides.
1. Your fuel consumption will go up, because you're revelling in the extra power and so you keep your foot down more often

2. It can make feathering the throttle, while under boost, a bit jerkier than it is standard. :frown:

All you are doing is changing where the car gets its boost reading from.
Instead of pre-intercooler, it will read post intercooler.
Simple.

Boags · Postby **Boags** » Wed Nov 07, 2007 10:36 am

Benny wrote:Why bother?
Because it's the best low-cost performance mod you can make to an SP!

Who was ti that said: "I've never met a KW I didn't like..."

Marador · Postby **Marador** » Wed Nov 07, 2007 10:45 am

Boags'MX5 wrote:
Benny wrote:Why bother?
Because it's the best low-cost performance mod you can make to an SP!

Who was ti that said: "I've never met a KW I didn't like..."

Although i havent done the mod yet, i did do a similar mod on my 2002 S15 when i bought it... the piping contained restricters... i went to repco, the guy even fitted the new hose for me... 7 pound went to 9ish... and the car no longer sat besides Integra Type R's

Marty · Postby **Marty** » Wed Nov 07, 2007 11:16 am

I did it and went from this before mod

to this after mod :shock:

you can feel the difference straight away without the dyno.

Garry · Postby **Garry** » Wed Nov 07, 2007 12:10 pm

The amount of power increase will depend on the efficiency (or inefficiency) of your intercooler and pipework. If the guy that built your SP got everything lined up right then the power increase wont be quite as large as one where the bits dont quite fit together properly. So someone like Casey with a perfect SP didn't notice quite the same power increase as a few of the other guys.

If you decide to go ahead with the mod keep an ear out for pinging as you are increasing the boost without changing the fueling. If your car is prone to pinging like my car was then it may not work for you like it didn't work for me.

Novice1 · Postby **Novice1** » Wed Nov 07, 2007 1:03 pm

Just out of interest how does a standard SP and a $2.50 modded SP compare to a WRX in acceleration.
Cheers
Novice1 aka Ron

bigdog · Postby **bigdog** » Wed Nov 07, 2007 1:03 pm

Novice1 wrote:You wont believe this but I actually have your car set as my desktop background .
Also, love the 1st black SP in the SP owners list thread.
CHeers
ROn

Careful... Marvin will get a swelled head :lol:

Caedrus' car is beautiful, as is Garry's and Fredbare's. I'd love to have bought a black one, but I really wouldn't want to wash it twice a day :shock: