In late october i decieded that after 5 years of owning my STI4 i was going to bite the bullet and try to squeeze as much power out of the car as was safley possible, i already had the usual mods, Apexi induction kit,hks hiper, hks headers, hks D/P,link ecu and a full RCM rebuild so a nice fresh engine to play with.
I knew the std turbo (vf24) was never gonna be big enough, so after alot of reaserch i got on the phone to Andy F and ordered a Td05/06 20g,next on the list was the i/c i really wanted to stick with a top mount but after looking at the prices of a good uprated top mount i was put off, (could'nt be bothered with the hastle of trying to fit an STI7/8 i/c)as luck would have it at the same time Harvey started a new Hybrid group buy so i added my name to the list, with the potential to flow alot more air the std fuel system was not going to cope so a walbro fuel pump was ordered along with a set of power enterprises 550cc injectors.
At the begining of december TweenieRob came round my house to fit the new turbo/injectors and fuel pump, before leaving he help me remove the front bumper ready for me to fit the new i/c which i did in 2 days, amazed how easy that was.
The 22nd of january saw me driving to swindon to have the mapping finnished by Bob Rawle after a problem prevented us completeing the job in late december.
And today i was booked into Engine advantage for a RR day with SIDC i turned up at 12.30pm and virtual drove straight on ot the rollers, to record a figure of,

383.2bhp@6920
318lbft@5786

To say i am pleased is an understatement, i've not stopped smiling all afternoon.

 

Well done mate those are good figures

How much boost are you running ? Have you uprated the internals ?

R.B

 

Let me be the first to say how nice those figures look.

I bet it feels very quick!



well I was first when I wrote it

 

R.B that result was made at 1.49 bar but i have seen upto 1.61 bar on the road, no it's std sti internals.

Grolly it fells F****ng quick

 

torque figure seems low torque is more important than outright bhp

 

Can you post the Power/torque printout please?

Good figures - what fuel are you running?

 

very low torque figure

 

I use BP ultimate, not the best but the closest.

 

We heard you the first time. It's bull****.

If what you say is true, almost every 2.0 turbo diesel should be faster than a scoob, as they have more torque.

A peak torque figure at an engine speed so low you will rarely use it if actually driving the car properly is of no use for outright speed. Roru's car has a good spread of torque, and more imporantly it maintains the torque almost right accross the RPM range, where you're typical car with small turbo and high peak torque, has only a small proportion of it's peak torque available.

You will also note that the car was slipping on the rollers at peak torque, you can see the sudden drop in torque at about 4700rpm. If it had not slipped the torque would have been a little higher, and of course it would be higher again it it ran the boost on the rollers which it did on the road.

Paul

 

Firm but fair, the metric versions of power ( kw/h ), torque ( n/m ), and looking at the area under the graph helped me to understand this debate better, not sure I would enjoy cars like Honda S2000 with high specific output but modest torque, with peaks of both at over 6000 rpm

 

Wow peak torque at 6000rpm ! That is high!

But here we have something with peak torque at about 4500rpm, which is real nice to drive, as when you change up a gear you are should have good torque available. But oodles of torque at 3000rpm, but not very much at 5000rpm is actually very dissapointing drive. You can put your foot down in 4th and get a rush of torque, but it rapidly becomes nothing, just like a diesel.

Paul

 

Thanks for pointing that out Paul, i thought that the torque figure was a bit low, i noticed the dip in the graph but did'nt think it as caused by slip.

 

Congratulations Andy, you must be delighted. It's results like that which give me hope lol...

 

Thanks Carl, i was going to start a project thread but unlike Graham and yourself i did'nt do most of the work myself, and i was worried that i would'nt reach my power target which was 350/330 so i'm very pleased.

I think i will leave it alone for a while and enjoy driving it for a while, although i'm so close to 400 , but i think that might be pushing the std internals a bit to far.

Andy

 

I'll be chuffed with a smooth running 350/330 for this year on the 5 speeder.
Those are great great figures; the car must be great to drive.....

What a great job!

Great God, better get on with mine tonight.

 

Graham the car does drive very well, and to honest the lag is not as bad as i thought it would be about 1 bar at 3100/3200 only about 200 rpm more than the vf24.
Did you get your air leak sorted out?

 

OOps wrong thread.

 

Air leak sorted
3 port solenoid sorted
CEL issue sorted

? Getting bored.

911

 

when is your mapping booked for?

 

17th Feb.
AndyF coming down to wave the magic wand, hope the cat d/p is ok.....

Must find a RR in the west midlands (suggestions?) for a simple power run afterwards to see where I've ended up.
I know PE rr's gave me 314 bhp @ 1.25 bar on Optimax on a stock with decat system engine 3 years ago.

Surely with all that's been done I can expect my goal

Graham.

 

Graham, have you tried Thor? Mind you their's is a hub dyno so probably not conducive to a 'quick run'

 

Could anyone give me an idea as to how many UK/STI (classic) with std internals run 400+ bhp?

Andy

 

Nice one Andy Glad you like the turbo

There have been a few 2.0's running just over the 400bhp on this turbo on std internals, my own WRX RA, Alan G, Tweenyrob, Jonny Gav, John Banks, Steve Gatens just from memory !

In most cases they were running Optimax and NF octane booster to get over the 400bhp mark. Your power figure is spot on for 97 octane on a well prepared and properly mapped car.

I can see from the graph where it appeared to slip, it looks like a torque of somewhere between 330-340 would have been achieved

Andy

 

Andy,

Wasn't sure if the turbo was gonna be to big for what i wanted 350/330, before i spoke to you i had it in my mind to get a straight Td05 but i'm glad i followed your recommendation and went for the 20g, having never had a 16g i'm not sure how much latter it spools but once it has . very pleased with it now.

Andy.

 

I'm getting excited!

Did you run straight Optimax for those figures or was there a whiff of NF in there?
I'm sure Andy has stated that the addition of NF and a map tweek on the Commander will pop in another 5 to 10% power(?)

Think I must get some more NF from RCM this weekend.

Pleased to read about the 20g.
Whew.

Graham (911)

 

Graham,

The run was on BP ultimate and that's all the car is mapped for, it's a 17mile round trip to my nearest shell garage and i'm not prepaired to go all that way for the sake of 5/10hp.

Andy.

p.s i have a Link not a pfc.

 

extremely impressive figures if i get anywhere near that i'l be amazed