More flow less torque?
 

It seems like the more flow my engine has the less pull it has.

I bought my car bone stock. It had original exhaust, intake, ignition, everything. It was slow but from a stop it would kick you back and you could really feel it pull.

As soon as i removed the cat and put on an aftermarket muffler (Flowmaster 80) i felt less torque, maybe more in the upper end. Then today I put on a Spectre air filter for more flow up top and as i leave after putting it on again it feels like it has less pull.

I think the best word to describe is it feels a lot smoother throughout the RPMs. Its very consistant but it just doesnt seem as torquey/jerkey as it did before.

So whats the deal am i imagining it? Do i need to adjust the air/fuel ratio now? Less back pressure? Usually the placebo effect is opposite where you think your car suddenly has 50 extra HP, not the opposite.

get rid of that muffler. i picked up 5 mph and 20rwhp from switching to a hooker aero chamber. same sized pipe. 3"in 2x2.5" outs

it could be lean

Well...you can almost forget everything i said...because ive been hearing this clunk off and on and today i finally dove in and sure enough the transmission mount was in half...bought a polyurethane...found the torque...

More it breathes headers etc you lose alittle down low but gain alot up top.

I'll have to dyno it someday. I rarely if at all floor it and I'm afraid to with issues I've had with past Camaros. It definitely changed with the mods just hard to tell.

Be careful running a poly trans mount if you still have the stock rubber engine mounts. When the engine flexes and the trans can't flex with it it can crack the tail shaft housing.

You would cringe at most of us on a daily basis lol

Good tip. Are engine mounts expensive? Poly ones anyway.

Not really but theyre a bitch to do.

^ What he said.

I saw they sell inserts. Is that all I need?

Yup. The poly inserts replace the rubber inserts and you reuse the metal shell.

Poly mount isn't gonna crack the trans unless his motor mount goes bad. I wouldn't worry about it. Especially at a whopping 200 hp the trans mount can hold the whole engine in place.

Haha 200hp thanks man! My 305 puts out a whopping 170 on a good day and 255ft lbs at the crank stock. Its a boat...a slow one.

yeah ls1's are really the ones that brought about that myth. higher hp. and like john sed unless motor mount rips your good.

I remember when I looked into it there were at least a couple people that actually had that happen to them. Will a 305 break the tail shaft housing? Maybe not. I just know that I wouldn't mix mounts on my car.

I was looking around and i found some moroso solid motor mounts that i think im going to buy. Should be effin awesome with the vibration and more torque to the wheels. Should be fun actually!

Highly suggest not doing solid mounts. You will not like them. I wouldnt worry about what you have one bit. Ran stock mounts and a poly trans mount on my car and it made 3x the power

If youre referring to the vibrations and uncomfortableness it im not worried about that. Is there anything bad with soldi mounts other than making the car uncomfortable?

for a daily driver it can fatigue the k member over time and cause cracks.

Roger that.