How is the torque and accel? 3 MPG ... that's pretty significant.

 

the accel from low to mid is great top end is not notice able as much as the low to mid, tq great i feel it more in mid only. here is the pic i wish i had a scale to weigh the damn thing n take a picture of it but its heavy compared to the stock one. I hope -md- hhr is going to get you guys some at z-spec price or better. on their site they had it posted for 150 then at one point at 100.00 i swooped in on that 100 and feel it was compelty worth it. If -md-hhr gets them at 100-125 deffenitly worth it. My mechanic says its a slip in job they did it in about 45 minutes with the right tools

 

Well $100 I think is below what I can do. Alot of people over on the J-body.org forum have had very very little luck and respect for RSM/Z-spec as a company. Many people have had money stolen and such. There has been many forum post over there on this topic. Last I knew the company was going under AGAIN. Also material plus maching alone would be fairly close to there selling price for their design. I mean I know, upOnGamE had a good experieance from them, but many have not.
http://www.j-body.org/forums/read.ph...48754&t=348754
http://www.j-body.org/forums/read.ph...9&t=104808&p=1
http://www.j-body.org/forums/read.ph...67495&t=367495
http://www.j-body.org/forums/read.ph...4&t=104808&v=t
http://www.j-body.org/forums/read.ph...=33246&t=33229
http://www.j-body.org/forums/read.ph...i=4964&t=1&p=2
And that only took like to sec. of searching.

 

well i was weary with them on there lack of communication skills and not timly matter of things. but i was happy i wasn't ripped off. well put it this way as far as the performance gains its worth what those intakes go for i noticed it more then my intake.

 

Glad to hear about the performance gains. Would love to see before and after specs-hear me, Mike SoCal? Like what you did with the Autolite plugs

How about the installation. Does it require a lift and can it be done by a 'backyard mechanic'? How much has to be removed to get to the pulleys?

I am VERY interested.

 

well i will be getting some dyno's soon like mid january can't do a before and after but you can get the estimate from others that are stock. I did not do it myself but my mechanic said it was easy take off passanger wheel then the plastic then there it is you just need a pullie puller or something like that you should have a problem if you have common know how. Its a must for performance our fat ladys need all the help they can get.
Mods we 2.4L can do to get that power
Intake,header,exhaust,pullies,light fly wheel,cams
The cams that our out are suppose to offer 20whp and the findeza lighten flywheel (for manys) offers 10-15who wow put those together and all other bolt ons we are looking at low 14's

 

did you notice any drawbacks like lights dimming when stopped at a light?
A/C runs okay? This is just a lighter pulley?

 

just a lighter pullie no lights dimming nohing of tha nature

 

Any vibration? That thing looks like a harmonic balancer also.

 

no more vibrations then i am used to i do have two str8 flow mufflers so i dont think i would have noticed it. the after market pullie looked the same just aluminum these is like iron