Got my Classic fitted with a VF34, fuel pump, K&N filter, sports cat exhaust, new plugs, oil, filter and a Simtek ECU at Rowleys in Devon today.

Couldn't fit the big TMIC yet tho cos I need a New Age recirc valve and couldn't get one in time, plus I'm wanting to make a bigger scoop to look like the std one. Just gotta find the old spoons, dollies and a sheet of ally and I'm away (I'll do a post of the progress when I do!)

Steve Simpson did the mapping and I've ended up 302bhp at about 6200rpm. Well chuffed with this, wasn't looking for Earth twisting power, just a bit more poke that's not gonna start breaking bits on the car.

Pic of the car before some **** dented the rear door and it got painted the wrong colour, anyone recommend a good paint guy near Exeter?

https://www.btcloud.bt.com/?shareObj...0-797a9a090d2b

Will post dyno readout when I get it next week (printer out of ink )

 

Not that good considering the turbo choice.

What model year and model car is it ?

cheers

bob

 

would of thought 330 is the norm for that Vf34

 

Sounds a tad low for the turbo and mods that you have,but as long as your happy with it,Enjoy.SJ.

 

Mine made 297BHP on a vf34 - Without a map

Standard cat, Magnex back box and Uprated panel filter.

 

Not after every last drop of power, just a nice reliable increase that won't start breaking bits or over stressing the (currently) standard clutch, gearbox, suspension, brakes etc.

The car is a UK MY99 with 37000 genuine miles, 1 previous owner with FULL HISTORY. It has been serviced every 6 months regardless, sometimes with only 50 miles covered!!!

I am trying to keep the mods sympathetic to the car's age and rust free condition and it still feels like new to drive apart from an annoying rattle from behind the passenger airbag somewhere.

Never having had a mapped Impreza before would you expect the car to drive as well as an unmodded car when cold or off boost? Mine was a little juddery before when cold which I put down to needing new plugs but it's still the same having started it this morning after a fairly cold 4degree night.

Probably all noob questions/comments but I've been out of the modified cars scene since I had this 10 years ago.

 

VF34 was a pretty pointless upgrade for 20bhp over the quicker spooling TD04 ? Not to mention the ballache of Simtek rather than a Ecutek given the year. Not trying to be a **** but a sports cat, panel filter, pump and remap on your existing turbo and I/C would have been a tidy quick car with better low down poke and reliability.

 

You know what, I was gonna reply to this but I'd just end up saying what I said in earlier posts.

 

I'm off.

 

 

My question is what is the point of these mods then buddy , no one's digging at you , but for your numbers you could have kept the money instead . Unless you like to show the mod list to Snet fwiends ....

In any case , if you looking to do something else in the future , then these mods will be useful.....

All the best...

 

Calm down flower... no need to get defensive

Why did you go SimTek? Why did you go VF34?

2 perfectly good questions as if you weren't after 'every last drop of power' you've just wasted the best part of a grand for a minimal power increase with less low down grunt as if you'd have kept the TD04 it would've spooled up a hell of a lot quicker !

Just trying to figure out why you've followed that particular route ! Not out to shoot you down

 

Won't the VF34 be quicker spooling with it's ball bearing design? Mine used to be on full power quicker than the other Scoobs I've had.

Like I said COSbros mine made 297bhp WITHOUT A MAP, tmic, standard cat etc. Same as yours I think. Something isn't right, maybe hoses? ****ed Cat?

Just trying to help you out here

 

No it won't, smaller turbo will spool quicker

If you had it mapped you'd have got another 60bhp

 

Your hesitation on cold mornings if on partial throttle will be a gummed up boost control solenoid. I was gonna say connect the plugs under steering coloum to put car in test mode (makes the boost solenoid continually open/close) spray it through with carb cleaner, and then a wee wee squirt of wd40

But having simtek it renders the plugs under the steering column redundant afaik now

 

Simtek has never been associated with cold start mapping related running issues lol

 

?? It was doing it before the simtek and its still doing it with the simtek.

Your 'lol ' smugness confuses me?

 

That wasn't how I read it mate 'before simtek' and I wasn't replying to your post I was elaborating on the simtek ballache as if serviced as maticulously as claimed, it's unlikely to be the plugs. Simtek couldn't be more mis sold in this case for the customers requirements IMHO.

 

Coolness. But aye i agree, simtek was certainly an unessecary expense in his case

 

Cosbros , as long as YOU are happy, that's the main thing Bugger everyone else !!
Steve is a very respected mapper, I'm sure he will improve on 302 once bigger TMIC is fitted .True,it would have been cheaper to just get your car Ecutek mapped without VF34 & Simtek,especially if you bought an already licensed Ecutek ECU.But I believe with Simtek you have the ability for Launch Control, Anti-Lag & maybe flat foot shifting (not sure about last one).I think to get the most out of yr VF34 you should prob change injectors to 550s.
An important point is should you change yr mind about the Simtek you can sell it for a good price secondhand.If you had gone Ecutek on yr ECU you would be lucky to get £100 for it after forking out £500 plus!
Anyway welcome aboard,I think some of the old timers are being a bit hard on you , just learn to develop a thick skin! Anyway I am v jealous as your car is mint!
Here's mine on a good day :

http://s622.photobucket.com/user/joh...b9bfe.jpg.html

It was a one owner 40k example when I bought it 5 years ago,still only done 58k but quite a few mods Beware modding is addictive but most of all have fun!
Cheers,John

 

Snet period week.

To the OP, if you're happy which it seems you are, then we are all happy! Well done!

 

He's just thrown a grand+ into this and it could of been done with a boost controller, putting it on a rolling road and checking the fuelling for about £150 and your saying well done?

Would like to know if you get this sorted.

 

Exactly, no harm in questioning a rather odd and expensive 'upgrade' considering the the spec and desired outcome. 302 @6200, **** me I couldn't wait that long

 

VF34 is a great turbo for sure but not for your car. You want the smallest turbo suited to your spec to ensure you get the most out of it. At the moment you have Usain Bolt with a massive dead leg

This is a Hybrid TD04 print out, but you get the idea Mean't as a post to help not to hate. But I couldn't live with my peak being at 6200 especially at a relatively low 302. Chose to ignore or plough on as you wish

 

Correct me if I'm wrong but I think you should be at peak power by 3.5k on a vf34

 

Nah peak power will be a bit later than that IMO , It will be on boost though

 

Correct and who are we to dictate what the OP spends his money on?

My point is this thread is getting rather pointed towards the OP, who originally came onto here to post results as he was very happy with his car. Since then he has left his own thread as he was made to feel there was something wrong with his pride and joy. So my comment was a positive note for the OP.

I understand people's comments and concerns but at the end of the day it's his car & decision.

 

+1,I totally agree.SJ.

 

+2

Each to their own but if I posted on a public forum what I'd done to my car, as a veteran or noob, I would expect and indeed want to know if there was a better way of doing things or if I was getting the most out of my spec sheet VF34 should be an upgrade, not a downgrade Happy motoring...

 

I also agree with this commentI don't think your comment was done to intimidate or in jest but to give a fellow member a different way about how he could of done things,which is what these sites should be about.But still say to the OP enjoy your car mateit must still be a good drive.SJ.