...So I went to a dyno run this weekend, to find out what kind of HP I was getting.

Well...

1st run: 98.98HP, 112.23 Torque
2nd run: 107.79HP, 115.17 Torque
3rd run: 107.82HP, 110.79 Torque

Needless to say my car is either a piece of garbage, or something is SERIOUSLY wrong.

.........oh and not only was I the only rotary, but also the only car under 150HP. My FC is gonna just sit in the driveway and THINK about how bad she's been this past weekend!!

The dyno day was for an SRT-4 club, so I was NOT representing the Mazda power very well...... Nor was my FC representing ANY sort of "rotary power," either.

Seriously, though, guys... please don't tell me this is normal. She's an '87 N/A, with just a K&N Performance Kit Air Intake. That's it. New spark plugs and wires this past October... nothing else... except 89 octane fuel and oil changes periodically.

They did the air/fuel ratio, but it's not on my charts... and the guy said that it was because she was running so lean... yet I think there isn't any reading on my chart cuz he forgot to put the reading on there.

Please suggest a list of troubleshooting tips, because I'm pretty pissed at my rotary at the moment. I know ONE solution is to drop a 350 in the FC.......... LOL.

 

Here's the dyno sheet...

 

i guarantee your auxillary ports are not opening. does the car feel like a total terd above 4000 rpms? it looks like it seeing the dyno graph... look into that.

 

yep, no aux ports make sure the air pipe is still attached to the converter.

 

It may also have something to do with the summer time heat.

B

 

Sounds about right to me. That's about a 20% driveline power loss. My 90 dynoed at 136 hp w/109 ft/lbs. I have the apex intake and RB street headers/presilencer/cat-back. It turned out it did have some problems, it was running rich above 5.5k, and the front 6port was stuck open, but still there is no way those problems would account for any more than a 10% loss. N/As just aren't that powerful.

 

What mods?
The torque looks about right, so the low HP numbers are probably due to the engine choking on the top end.

Full exhaust?
If you still have cats, it's most likely clogged.


-Ted

 

erm.. sounds about right...
a little tired bone stock engine...
what did you expect?

 

Those numbers give alot of credit to the guys who are pushing over 400rwhp and a few who are over 500 and discredits the "quick" NA theory.

 

You never give up do ya? Heh...

Just because some people prefer n/a over turbo, WHY does that matter? I don't think the thread starter was ever even asking anything like that, all they wanted to know was what was wrong.

I got ~120 rwhp on the dyno when my actuators were frozen SHUT and I was only running off 4 ports. This was with full exhaust and cone filter pretty much (still a main cat too) with just some bs manifold porting.