mystery inc.

right then., i was wondering if i could squeze anymore power out of my sti type ra. here is a link to the spec of the engine. its peaking at 1.8 bar and tailing of to 1.6 at 6,500 rpm. running octane booster with v-power

power graph. http://i302.photobucket.com/albums/n...Zendynorun.jpg

Engine:
Engine built 10K miles ago to the following spec
2.0 litre Closed Deck Block with oil squirters, decked and honed to correct clearances for high boost/power applications, block converted to phase 2 thrust bearing location.
Oil pump stripped, checked and shimmed for 7BAR oil pressure
8.3:1 compression ratio
STi9 cross drilled and nitrided crank
STi8 forged pistons and rings
STi9 Rods with rod bolts
STi9 steel head gaskets
ACL race main and big end bearings
STi5 heads freshly decked and valve seats cut, correct STi5 cams and valve springs (all individually pressure checked) etc, clearances shimmed correctly
16 x new Supertech stainless valves, new valve stem seals
TD05 Big 16G FE turbo running at 1.8BAR peak, 1.6BAR at top end
EcuTek Mapped by Bob Rawle showing 338BHP, 347Lbft on the Zen Performance RR last month, shows aprox 10BHP/Lbft more on the road using Delta Dash
AP racing organic clutch, feels like stock with no judder unlike some alternatives
Exedy billet flywheel
Ported and wrapped stock headers with slip jointed magnex up-pipe (small bore version ideal for spool and 400BHP power levels)
Scoobymania 3” stainless downpipe and resonator centre with bespoke quieter than usual 3” system backbox
PFR7B plugs
High flow panel filter
Group N fully baffled sump
Oil breather system with return to sump feed
The engine is specced for over 400BHP with a turbo and injector swap and remap, it’s currently setup for daily use and is a very quick cross-country drive with lots of lag free torque.

Engine management:
BRD EcuTek remap
Apexi AVCR boost controller
SX FPR
Walbro 255lt fuel pump
Reverse flow fuel rail setup

thanks
paul g

AndrewC

Not a mapping issue IMHO, needs a better intercooler.

mystery inc.

might change to a sti8 intercooler. or front mount. would it need remapping for a fmic?

mystery inc.

right then. Going to change to a top mount I think. Then maybe a fmic in the summer. Will the car need mapping after a fmic install?

TonyBurns

iTrader: (3)

Just ask John he has had 2 of these (this one being his last one )

Tony

mystery inc.

I spoke to john. Might be buying his topmount. He said if I fit the sti 8 intercooler it will run more power. Will be better on them warmer days. Not in any rush to fit one. As it's very fast now. Just I was getting about same power with my old car on less boost. But that did have a fmic. It's just the bug I have got, where I'm always wanting more power.

Paul g

jasonius

iTrader: (1)

How come the bhp/ft-lb plots do not cross at the usual 5400rpm..?

MartynJ

It should be 5252rpm Jas, and would be if the scales on the left and right of the page were the same.

Pete

It,ll need mapping yes, WHY change twice?? do it once job,s a good-en..

mystery inc.

it's because it's set up for fast. Cross country use. Loads of low down lag free torque.

AndrewC

Fit the STi8 TMIC and start saving for a better turbo, MD321H will spool very similarly but pull all the way to 8K and make around 400bhp.

jasonius

iTrader: (1)

Ah, hadn't spotted that..

I knew 5400 weren't right (thought it was 5300 something ) but couldn't be bothered to look it up..