escorted Posted February 20, 2012 Share Posted February 20, 2012 Good afternoon, I would like to get more hp out of my current engine package (rb30t) To do this I would need to first upgrade the computer. To acquire the new Ecu and have it tuned I have been quoted about 4k. For the same price I Could build a mild stroked 308. Has anyone had luck/experience with 308s ? Should I stay with the rb30? Matt Quote Link to comment Share on other sites More sharing options...
cute wee gem Posted February 20, 2012 Share Posted February 20, 2012 All comes down to what you prefer? 4k sounds steep for ecu and tune, is that to be wired in as well? I imagine a warm 308 would make 250-280hp? With an aftermarket ecu on an rb30 I think you could make a fair bit more with a good turbo setup and even more with the DET conversion, but I'm not sure how hard/expensive that is. What turbo you running? Quote Link to comment Share on other sites More sharing options...
Toot Toot Timmy Posted February 20, 2012 Share Posted February 20, 2012 Votes RB30. Have lined up both and the results were quite surprising, the Auto VL 308 could not pass the 5-Speed RB30 VL. There is science for you. 308's sound beautiful though. Quote Link to comment Share on other sites More sharing options...
DavidTheCreator Posted February 20, 2012 Share Posted February 20, 2012 i vote rb30 aswell. i would go 350 over a 308 anyway, surely the prices arnt that different Quote Link to comment Share on other sites More sharing options...
LS 2 THE DEEE Posted February 20, 2012 Share Posted February 20, 2012 father in law has a 240z with RB30 in it.....sounds awesome and is 403 horse...it took dollars for those results but it is a race car Quote Link to comment Share on other sites More sharing options...
durty Posted February 20, 2012 Share Posted February 20, 2012 Rb30 vote Quote Link to comment Share on other sites More sharing options...
danger Posted February 20, 2012 Share Posted February 20, 2012 Dont like rb30s but not a fan of 308s either. Prefer 253s... Also building a 308 isn't cheap. Parts are really expensive compared to chev. Quote Link to comment Share on other sites More sharing options...
cletus Posted February 20, 2012 Share Posted February 20, 2012 youl go faster cheaper with rb30 theres heaps of them in `straya running fairly quick times yu1Totn7kyo Quote Link to comment Share on other sites More sharing options...
RUNAMUCK Posted February 20, 2012 Share Posted February 20, 2012 RBRBRBRBRBRBRBRBRBRBRBRB! But seriously, for your ecu needs, just buy a nistune tool http://www.nistune.com/ and get yourself an inovate wideband with usb cable for data logging. Then download the software, and teach yourself how to tune. It'll cost you less than the price of a G4. And you'll be able to get your tune within kuwee before you hire a dyno for a day. The nistune tool allows you to reconfigure your factory ecu to take larger injectors, bigger afm, etc ect. The three-0-late isn't somehwere I'd go. you could build a decent 350 far cheaper. (As already said) Quote Link to comment Share on other sites More sharing options...
escorted Posted February 20, 2012 Author Share Posted February 20, 2012 Wow thanks for the feed back lads, I do like my RB but i find the set up a bit "wanky" with the blow off valve and such. Yes a 308 does sound nice. Tbh I am more Interested In Doing skids and f'ing about than doing huge speeds and quarter mile passes. A 350 would be nice you are right, something to consider. Suggestions on dyno places to Ring re: a new ecu? Quote Link to comment Share on other sites More sharing options...
OSM Garage Posted February 20, 2012 Share Posted February 20, 2012 I vote 308/304 combo. Just cause I go for the underdog. Single turbo conversion would be enough to get you in trouble. $4k may not be enough for this though. Quote Link to comment Share on other sites More sharing options...
RUNAMUCK Posted February 20, 2012 Share Posted February 20, 2012 buy a nistune tool http://www.nistune.com/ Also I reckon the 308 is one of the worst sounding v8's there is. I can pick the sound without even seeing it's a holden. They're all flap,flap flappy, and uneven sounding if you ask me. Quote Link to comment Share on other sites More sharing options...
escorted Posted February 20, 2012 Author Share Posted February 20, 2012 My neighbour owns "tufhdt" a stroked 304 powered vk and forgive me but I think it sounds cool. what brand of ecu should I be looking at? Quote Link to comment Share on other sites More sharing options...
durty Posted February 20, 2012 Share Posted February 20, 2012 Wow thanks for the feed back lads, I do like my RB but i find the set up a bit"wanky" with the blow off valve and such. plumb the BOV back in so it doesnt sound like its sneezing and wank factor will be halved Quote Link to comment Share on other sites More sharing options...
RUNAMUCK Posted February 20, 2012 Share Posted February 20, 2012 Just run the factory ecu. Nistune enables you to remap them yourself. Quote Link to comment Share on other sites More sharing options...
Threeonthetree Posted February 20, 2012 Share Posted February 20, 2012 I vote 308/304 combo. Just cause I go for the underdog.Single turbo conversion would be enough to get you in trouble. $4k may not be enough for this though. Underdog gets my vote too. Holden 308 with blow-through carburetted turbo setup. Can pick up a decent 308 runner for cheap. Bolt-on the rest and tune to suit. The cheapest way to get any power out of an early Holden V8. I am toying with stroking mine. As I'm after a factory appearance, this would be the best option for me. But if power was the sole goal I'd turbocharge it. But as to the original question, if you really want to make more power an RB30ET is a far more logical and cost effective choice. In all reality the 308 has nowhere near the power-developing potential of the RB30ET and is a step in the wrong direction unless you're doing it for self-satisfaction/nostalgia/you just like V8s and don't care what others think Power is only a small fraction of the equation for me hence why I'm sticking with the 308. Quote Link to comment Share on other sites More sharing options...
cletus Posted February 20, 2012 Share Posted February 20, 2012 I can pick the sound without even seeing it's a holden. They're all flap,flap flappy, and uneven sounding if you ask me. i remember hearing 308 statesmen with twin pipes when i was a kid and thinking they sounded funny. fitting old style chev in a commodore is a bit of a prick, chevs have starter on our drivers side so it interferes with the rack, you can buy a chev into commodore kit but it spaces the front x-member down about 40mm, so you cant lower it fuckall and needs a longer steering shaft. ls1 however, is a better idea, they haul ass in early commodores and moving the starter to the other side is not too hard, and its easier to find a good runner that doesnt need a rebuild Quote Link to comment Share on other sites More sharing options...
escorted Posted February 20, 2012 Author Share Posted February 20, 2012 Thankyou friends, you have some what swayed me back towards my RB30, save for the BOV that is. The nistune idea is an interesting one thankyou. I would like to do a v8 in a holden one day just to be bogan. Any suggestions on where to start with modifications to the turbo set up? Quote Link to comment Share on other sites More sharing options...
drftnmaz Posted February 20, 2012 Share Posted February 20, 2012 i recon you should have a talk to any at X-tune(north shore, auckland) if you decide to stick with the RB30, he can chip and dynotune your factory ecu, then your only limited by your turbo, fueling and then internals, he is the man when it comes to boosting high comp engines tho!!! usually round the $1100 mark for a chip and proper tune, (some road tuning for low-load drivabilty and then dyno to chase upto power and better knock checking) Quote Link to comment Share on other sites More sharing options...
Borgweiser Posted February 20, 2012 Share Posted February 20, 2012 LS1 is my vote, bit of money but already making ponies and easily worked up a bit, failing that 350 with good heads Quote Link to comment Share on other sites More sharing options...
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