i went to the track to lay some base lines in my se 88 rx7 to my suprise a 17.0 quartemile after 4 times of tryin different launches i gave up ,,, it felt like i had no top end after 5k to begining of red hollabac with some ideas my car should be running 15.5 thanx

 

and what did you expect from a 20 year old car??

 

low compression?

 

It's an NA RX-7; don't expect it to be super fast. Since when did S4 NA's run mid 15's? On it's best day in 1988, it should run about a second slower than that - at best. Do you have any mods done? It might help a little to do a 60k tuneup. 17 seconds doesn't surprise me too much if your car is stock.

 

that wat i was sayin not to bad for a 88 lol

 

that wat i was thinkin she an oldy but with only 100k on the engine

 

2.5inch straight pipe exhaust after headers and intake

 

Are your aux ports opening?

EDIT: new replies since I posted.

I bet they're not if you have a different exhaust on there.

 

Interesting...
Here is where I am pulling my stats from.

http://www.mazdamark.com/about_the_fc.htm
http://2ndgenrx7.freeservers.com/

 

your aux ports are nor opening, i guarantee it!
the aux ports on your year car open due to back pressure in the exhaust, if you removed the tube that connect to the stock cat, then there yah go.

 

Just take off the lim and pull out the sleeves.

 

or get an electric air pump and wire up an RPM switch.

 

Or save the money and take the retarded sleeves out. Or hook a rubber tube and a valve to your air pump.