Dyno Numbers - your opinions please...

[LizardKing 2002]

On a mustang Dyno - an 05 Mustang GT with 35000km (22K miles).

Mods
K&N drop in filter (no piping)
Flowmaster Mufflers.

296.3rwhp@5500 and 304rwhp@4300

 

[ttown]

Are these SAE or STD number?

 

[JTGrant]

On a mustang Dyno - an 05 Mustang GT with 35000km (22K miles).

Mods
K&N drop in filter (no piping)
Flowmaster Mufflers.

296.3rwhp@5500 and 304rwhp@4300

there is no possible way.

 

[PDXStangDude]

Everything I've heard/read stock s197 come in around 267-272'ish rwhp. With no tune, just a K&N drop in filter, flowmasters you would be pushing to make 10hp gain IMO. So that's what 280rwhp tops.

 

[radtexas]

Well like discussed in a prvious thread all Stangs dyno a little different. How much variance could be a little up for grabs. Maybe your engine is on the high side of the stock range?

If so consider yourself one of the lucky ones.

 

[JTGrant]

sorry but a basically stock mustang gt with the few mods that you have is not going to make that much power. run it on a different dyno and compare.

 

[ttown]

A little different yes but that's way out. Keep in mind this is a Mustang Dyno not a DynoJet, it typically loads the cars and reads 10% low. On a DynoJet this would be over 300 RWHP and I've never seen any 3 or 4 valve car over 300 RWHP without a mid-pipe, mufflers, and a good tune. I'd say the dyno isn't calbrated or this is STD numbers.

 

[bigcat]

 

[JTGrant]

A little different yes but that's way out. Keep in mind this is a Mustang Dyno not a DynoJet, it typically loads the cars and reads 10% low. On a DynoJet this would be over 300 RWHP and I've never seen any 3 or 4 valve car over 300 RWHP without a mid-pipe, mufflers, and a good tune. I'd say the dyno isn't calbrated or this is STD numbers.

I agree.

 

[radtexas]

I am just the village idiot and don't know any better.

 

[red05bullitgt]

On a Mustang chassis dyno ?? with just the few mods you've done so far ? NO WAY..you couldn't even get those numbers on a dynojet, unless whoever tuned your car really leaned out your A/F mixture ?.. Speaking of which, did you get your A/F checked ?? if you happen to notice any type of knock and ping, I'd advise that you get it checked out as soon as possible

 

[LizardKing 2002]

Thanks for the clarification.

 

[wotfr]

I'm with radtexas you could have a factory wonder on your hands. I used to own
an '89 5.0 Coupe T-5 3.08 gear K&N panel, otherwise bonestock including timing. Well that little wonder pulled like it had at least 3.73's. I know what your thinking, another butt dyno testimony, but I wouldn't rule anything out.