hi,i will be taking my car for a mapping session very soon and would be interesting to see what you guys think it will make.power and torque.
spec...
1998 impreza sti type r 2 door.
jdm v9 short engine(rebuilt)
v4 type r heads(refreshed)
cosworth head gaskets
heatwrapped h&s sports cat downpipe
h&s 2.5 centre pipe
prodrive backbox
walbro pump
ngkpfr7b plugs
rcm induction
samco intake
hybrid fmic
3 port b/s
afp 20g turbo
lateral flowed 900cc v spray injectors
apexi power fc
exedy pink clutch kit

im would like to see 370/350...
any thoughts?
thanks.

 

Yep would expect to see circa 370 to 380 buddy.
Throw a splash of meth into the mixer and you'll be on top of 400 with almost as much torque.

 

wont be using any meth,changed my mind,forgot to say,it will be maped for v power only.

 

370 is possible,with meth you should expect more



Jura

 

roll on mapping day!

 

Stop being *** and get some meth in there, my only regret is not using it sooner.
Completely transformed my car and I don't find it a pain to use at all.

Trust me,
You'll get it mapped and will wish you used meth.

 

+1

 

Completely agreed,car with 20% methanol feels much better and spools faster,plus extra 40bhp worth extra messing with the methanol



Jura

 

a ***?
its difficult enough to get v power where i live, and with 2 kids i really dont want the added ball ache.
i also think that by putting the meth in,that could be the end of my 5 speed,
i think ill map for v power and keep my fingers crossed for 370/350+.
if my situation was different i may well go for a meth mix,tbh i just cant be arsed. 370 in a type r will be pretty rapid i think.

 

yes for a track car it is worth it,but for an everyday road car im not so sure.

 

Hi there

I know several people who using they cars everyday and using methanol on daily basis

We are buying 25L of Methanol for £15 and really worth every penny

Car with the methanol will run much smoother and really easy will pick up the revs,plus spool on yours will be improved too

Just don't be scare with methanol mixing


Jura

 

My own experience...

First time my car was mapped with the 20G a few mentioned meth to me. At the time I didn't really want to use it as couldn't be arsed with all the messing around with ordering it and mixing it. Thought it would be a ball ache everytime so opted for straight V-Power.
After a few months I decided I wanted a few more ponies so did a bit more research and chatted to my mapper.
The rest is history, don't find it a pain to use and the benifits IMO are worth every penny and added effort.

But, my car is not an everyday car and I completely understand that using meth won't suit everybody. Your car will be an animal buddy with that 20G that for sure with or without meth.

 

just try v power too many adding meth because they cant get v power figures you can always add it at a later date if you need more power

 

hmm,were are you buying it from? £15 for 25 ltrs is cheap.

 

No idea on numbers but if you drive the 370/350 properly I predict a "whats the best six speed ?" thread before the year ends Your wagon 5 speed box shat itself with less power fairly soon after you sold it

 

scaremongering!
i think ill leave the meth,having said all that there are alot of 752 dccd boxes running 400/400 ish and have been fine,and some have been up the drag strip alot aswell.
i know the box is pretty much pot luck really and i like the ratios,it will be treated nice.

 

Meth is pointless for an everyday car, fair enough if you can run dual maps.

 

+1...i dont think dual maps is possible on power fc.

 

Why ????

You could say that an Impreza turbo is pointless as an everyday car.

 

Well, apart from pi$$ing about everytime you fill with fuel do you actually know firstly, how dangerous it is and secondly the long term effect it has on your tank and fuel lines?

It isn't like a bottle of octane booster people used to carry around in their boots before Vpower.!

Methanol is for either race/track cars or pubtalk/dyno queens.

 

yup, fair enough if you had twin maps. stick with the v power for now. The v3 or v4 box with gear ratios is a massive appeal. Dont break it

 

 

Have you ever used it ??

I personally don't find it a problem to use at all. I store it in a container with a tap on it, pour 5 lt into a fuel can and take it with me to petrol station. Pour it in and then add 20lt of V-Power. I hardly think that's a ball ache, an extra 2 mins on my filling time which transforms the drive of my car.
Dangerous,,???? So is storing petrol. Used correctly and using common sense its not dangerous. Admittedly if you pour it into your eye or quench your thirst with it then you'll have a few issues but I haven't hurt myself yet.
I also know of guys on here who have used meth for years and not suffered any problems with their fuel systems. A 20% mix (which most use) is fine, it's when you start using far higher percentages that issues with tanks and lines can start.

 

fair comment matty,i dont think that the added hassle is whats really putting me off using it tbh,i fear for my 5 speed and i dont want to break it,if it does break and i have to replace it then i would probably go for a 754 type r box and then maybe use the meth.
the added torque it gives might just do the box in,nobody knows where the limit is,but im just trying be as sensible as i can.ill try to prevent it from breaking but if the worst happens then i may give the meth a go after a replacement 754 5 speed/6 speed has been fitted..what increase did the meth alone give over v power with your 20g? and how much torque was gained?

 

i agree,the ratios are brilliant even at 300bhp,at 370+ the acceleration should be pretty nippy.

lets hope i dont break it...i will treat it with the upmost mechanical sympathy and if it does break then it wont be my fault.

 

Thats a very fair comment buddy, maybe the added torque might be a bit much for your box. I'm using a P1 box at the min and so far so good but I have to be very considerate.

 

what amount of power and torque was added by using a meth mix compared to straight v power?

 

Yup, used to run 10% in my old RA for trackdays, mainly as an octane booster in case i picked up a bad batch of fuel.

 

Good luck with you gear box matey ;-)

 

a small amount of sarcasm?