Baseline '91 318is Dynojet dyno results

[808AWD325xi]

I had my stock 1991 318is dyno'ed today. Assuming 15% drivetrain loss, I was hoping for at least 113whp SAE corrected. :)

130k miles
4th gear
92 octane pump gas
58.43 F
39% Humidity
Air/Fuel taken at the tailpipe

[browntown]

wow, I thought the twin cam 318's did a little better than that.

[808AWD325xi]

wow, I thought the twin cam 318's did a little better than that.

Considering that the 318is was originally rated at 134bhp, 117 to the wheels is good.

[Jean]

Seams alright to me, the 8v must be making about 80 whp LOL

[browntown]

Considering that the 318is was originally rated at 134bhp, 117 to the wheels is good.

I didn't know what they were rated at, was just surprised.

[drifty340i]

Thats a pretty darn good result really

[Van Westervelt]

Damnit Paul. I woulda brought out the swap car to dyno if I had known you were doin this.

Not bad for an m42. Now get that chager on there and redo it! :)

[808AWD325xi]

Damnit Paul. I woulda brought out the swap car to dyno if I had known you were doin this.

Not bad for an m42. Now get that chager on there and redo it! :)

Perhaps if we still had regular PDX GTG's we might have talked about it...:-P

[SpeedTheory]

What are the plans for it? Good to know the baseline, but I want to see what the TRUE gains are from a chip, then exhaust, then intake w/heat shield, potentially without having to do it on my own. I keep getting mixed opinions on whether or not an intake is going to give me any gains (concerned only about area under the curve, not peak numbers).

[Van Westervelt]

What are the plans for it? Good to know the baseline, but I want to see what the TRUE gains are from a chip, then exhaust, then intake w/heat shield, potentially without having to do it on my own. I keep getting mixed opinions on whether or not an intake is going to give me any gains (concerned only about area under the curve, not peak numbers).

Grassroots Motorsports did all this like 2 years ago on an m42'd e30.

[SpeedTheory]

Yes, but they installed the intake without software or exhaust, iirc. Actually lost power, from what I recall. I know software will provide a good gain, as will the exhaust system, but I want to see if anyone has PROVEN gains from an intake AFTER having done software and exhaust. Also, they only recognized PEAK numbers, not the area under the curve. That's fine and dandy for caring about cars that will only be driven WOT at the high-end of their rev range, but as an autocrosser, I'll be in low-rev second gear a good bit for technical sections of courses, and that matters to me just as much.

[smonkbmw]

at low/autocross speeds i doubt a intake will do you much good, theres no air flow at or around the air filter, except hot, underhood air.

[pwforprez]

i wish i did a baseline dyno i want to see how much a chip+m20 flywheel will do. along with minor other things

[808AWD325xi]

What are the plans for it? Good to know the baseline, but I want to see what the TRUE gains are from a chip, then exhaust, then intake w/heat shield, potentially without having to do it on my own. I keep getting mixed opinions on whether or not an intake is going to give me any gains (concerned only about area under the curve, not peak numbers).

I'll probably do a TMS chip first -- it will probably be a while before I'm willing to bother with an intake or exhaust. I really don't believe CAI's accomplish much except compound the overall maintenance burden.

[peete]

Seams alright to me, the 8v must be making about 80 whp LOL

Actually mine made 95 rwhp bone stock. 234k miles and 93 octane.Taking into consideration drivetrain loss, the OP's car is making good power.