133.9 hp NA Aveo now become 144.6 hp

[xiaogary]

Hi guys,

need some advice. My aveo now was dyno-ed 133.9hp on the wheels. It is a 1.4 DOHC aveo for those who remembers.

I have since stroked it with Lanos crankshaft, modified the crankshaft sensor to fit, big-bored with 81.0mm wiseco pistons 11.1:1 compression with pocketed valve cuts. Also changed to forged H Beam rods with ARP bolts. And ARP head bolts. Using Cometic 1.3mm gasket. Resultant cc is about 1680cc.

The head were ported and polished. The trottle body was bored. The fuel pump was changed to Walbro 255 liters/hr and installed a return line with SARD fuel regulator. Injectors remained stock and unchanged.

The dual cams were from a 1.6 lanos brand new and regrinded in UK to 266 durations. The cams were about 1.1mm lift higher than the stock 1.4 cams.

The exhaust is a set of long 4-1 extractor, removed cat, 1.8 inch mid pipe and 1.8 inch HotBits rear semi flow muffler.

Currently running UNICHIP piggyback which is unable to remove the power cut at 6.6K rpm.

The dyno chart are as follow. Need some comments to how to improve it further.




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[xiaogary]

Oh yes, has since changed the rear muffler to Remus universal 46mm straight through exhaust. Now wondering whether to change the 1.8 inch (46mm) mid pipe to 2.0 inch. Do I need another round of tuning? If yes, I will go for another dyno and post the new dyno charts soon.

[AVE0SAM]

nice thats around 110 to the wheels

[Kinkyllama]

nice thats around 110 to the wheels

Try closer to 122whp. Very good figures. Front wheel drive drivetrain lose is usually around 15%.

xiaogary I'm sure this isn't what you're looking for but have you considered a engine swap? A U20SED makes those figures with basic bolt ons. Since you started off with the 1.4 you probably only have the T18SED where you're at but those are almost identical. It's from the optra/lacetti btw, or better yet if you have the leganza there then the 2.2 but those usually cost a bit more.

[o4aveohb]

actually isnt it 133 TO the wheels, I thought dyno's measured HP at the wheels, not at the crank unless its a dyno hooked straight up to the engine.

[khan4rtist]

wow thats nice, i wish i had that power, lol

[AVE0SAM]

actually isnt it 133 TO the wheels, I thought dyno's measured HP at the wheels, not at the crank unless its a dyno hooked straight up to the engine.

the graph would say whp not bhp

[mkt8891]

wait if he said it makes 134 wheel hp, that means he's making close to 150+ hp at the crank right??

[AVE0SAM]

wait if he said it makes 134 wheel hp, that means he's making close to 150+ hp at the crank right??

man this thread is confusing...title says 133.9 bhp but he says 133.9 to the wheels in his post...then the graph says bhp...if it is really 133.9 whp then holy crap that is a big gain over stock.

[o4aveohb]

134 to the wheels would be reasonable with all the mods he has done.