How are modded 240s tuned? I never see a dyno sheet in the for sale section.

[Corbic]

Originally Posted by 420sx

it has, engine, engine mods, etc. sometimes you can get good deals or not.

high end high horsepower cars many times will provide a dynosheet. stocking sr's will not and it will be DUMB to ask. you can always pay for the dyno yourself just like you said.

What would a Dyno prove anyways? Dyno =/ Tune

A dyno sheet just shows what power the engine is making, and even then a dyno operator can bullshit it up to hell.

The OP has no idea what the hell he is talking about. Few people on LSTech or Protouring post up dyno sheets with their 4 sale ads. Also, swapping a SR does not require a tune or a dyno since your using the original ECU.

Further more, as I stated a Dyno shows NOTHING. If your worried about AFR or a proper tune, you need to see a tune map and even then it could be a billion years old or any little thing could have change, vaccum/boost leak et al. This is why people put gauges in their cars.

A dyno tune is also not $100 more. Its typically $100-150 an hour... Any monkey can just as easily street tune a car by data logging. Your just making adjustments for AFR on a map and then uploading that. Its going to be far better than a dyno buy some shysters as its real world load. The only downsize is theres no "OMFG I made 475whp!!!" chart to go wave around like you just lost your virginity.

Then again, that is what drag strips are for - 1/4 + trap tells you more than any stinking dyno and even if you "Cant hook up" that tells even more.

[mx597turbo]

Originally Posted by Corbic

The OP has no idea what the hell he is talking about. Few people on LSTech or Protouring post up dyno sheets with their 4 sale ads. Also, swapping a SR does not require a tune or a dyno since your using the original ECU.

A dyno tune is also not $100 more. Its typically $100-150 an hour

Then again, that is what drag strips are for - 1/4 + trap tells you more than any stinking dyno and even if you "Cant hook up" that tells even more.

First, I was referring to corvetteforum.com, not ls1tech. The LS1 stock makes about 300rwhp. I agree no dyno is necessary for someone saying their car is at 400rwhp. But honestly, if someone is claiming 450rwhp (a 50%) increase, I would like to see some proof. Receipts can be faked just as easily as a dyno sheet. Which is why I would pay for their dyno run. I would have to be pretty much set on the car, all numbers worked out, and that would seal the deal. I wouldn't ask the owned to pay for it. For an sr/ka, it would be when the seller claims their car is >400hp.

As far as dyno tunes costing so much, You can get a mail order tune for both a Corevette / FBody or Mustang for about $150. I know of several local tuners (with good reps) who will dyno tune for about $300-$400. So you're looking at $150 - $250 more than a mail order.

I also agree that trap speed is probably the best indicator of real world hp. 1/4 times are very driver-dependent.