The Goal, 170whp N/A
Senior Member
Joined: May 2005
Posts: 959
Tweakit is a good spot for the ITBs..others offer them, but they are more money for the same quality IMO.
As for the whole discussion - rowtareh says it - its opinion, would i race on a bunch of used stock parts i rigged up on my NA engine - hell no, I've been on the track to long and seen too many let downs because you didnt go the extra mile (or $1K).
Race whatever you want, but eventually - real power and real reliability means doing it right. I did it wrong for many years and paid a hefty price, I'll never go back...
BTW - s4 stock boost isnt 8psi, just an FYI...
As for the whole discussion - rowtareh says it - its opinion, would i race on a bunch of used stock parts i rigged up on my NA engine - hell no, I've been on the track to long and seen too many let downs because you didnt go the extra mile (or $1K).
Race whatever you want, but eventually - real power and real reliability means doing it right. I did it wrong for many years and paid a hefty price, I'll never go back...
BTW - s4 stock boost isnt 8psi, just an FYI...
Senior Member
Joined: May 2002
Posts: 22,465
From: California
Originally Posted by Rotary_Engaged' post='871825' date='May 14 2007, 07:43 PM
180 flywheel hp shouldn't be too hard
no its not. we did 170+ rear wheel with the following setup:
s5 na block (stock, as per the rules)
s5 na intakes
custom header into 3" exhaust (i think its overkill, 2.5" should work)
haltech e6x
msd 6a on leading
on the stock ecu we were down under 10PEAK hp ,BUT the haltech gives you a much broader power band, from 3500-5500 stock ecu is down like 20hp, and over 6500 the stock ecu drops off where the haltech doesnt. also the haltech gives us enough better mileage that we didnt need the 3rd pitstop anymore
Member
Joined: Mar 2007
Posts: 39
im in the middle of my S4 NA 170whp build here is my take ...there is a s5 NA w/ 170whp around where i live so an S4 wont be much off ...do the exhaust, ect ...stuff you mentioned and get a good EMS...tuned right should be able to pull it off....im making 161whp on my full exhaust RB headers, custom catback no cats..., reworked ignition (bigger wires ect) 11lbs flywheel ...good XTD clutch ..synethic everything ...custom intake ...no emissions...and a SAFC...i just need a few more horses then im done 
its a quick little car now ...i dropped some dead weight and run 14s at the quarter mile...although i hardly ever keep the car straight ...DRIFT
Senior Member
Joined: Dec 2001
Posts: 376
BTW - The best stand alone ECU will be the one that your tuner works\tunes.
Thread Starter
Senior Member
Joined: Mar 2007
Posts: 143
Originally Posted by knonfs' post='871988' date='May 16 2007, 10:43 AM
BTW - The best stand alone ECU will be the one that your tuner works\tunes.
Senior Member
Joined: Dec 2001
Posts: 376
Originally Posted by Rotary_Engaged' post='872046' date='May 16 2007, 07:17 PM
Hey you did post solide numbers
You can actually go higher than that; if you go with a ITB\Holley style TB (and its matching intake manifold)
Senior Member
Joined: Jan 2003
Posts: 485
From: El Paso, TX
A very good upgrade for any n/a guy is a 4.30 rear end with LSD. Also if you are looking for cheating n/a power to an electric supercharger from e-ram. If i had the extra $500 laying around I'd do it.