Alright guys, I've tried searching, and no real luck. The only mod I've found where people claim any low end gains are the underdrive pulleys. Is there anything else out there?

My g hauls once the rpms are up, but it just feels so sluggish from starts. Reminds me of the powerband on my old kx80. Any other mods to help on the low end?

 

revup motor? If yes, then motordyne products. How heavy are those 19" Sterns? If they arent' forged then they are probably hurting your low end.

Your Invidia G200 also isn't setup for the best low end either. No X or H pipe

 

Plenum spacer or spacer with MREV if you have a Rev-Up.
Those are best mod for low end.

 

^ What about a non-revup AT? Do those underdrive pulleys really work?

 

I don't know the exact weights of the wheels, but I think they're around 22 each rear and a little less front. Shipping weight for two wheels in boxes was 55lbs. I didn't really notice a difference between those and the stock 17's.

The G200 has duals from the cat back to the muffler. I would think that would be a better set up flow wise for power all around. But that's just my speculation. Perhaps the x or h pipe change the back pressure somehow allowing better low end?

I'm an 05 at, so no rev up. Plenum spacer is my next mod. I'm not changing anything I have on the car, just looking for other bolt ons to consider. Thanks for the feedback so far.

 

HFC and tune & shorter final drive ring & pinion = good trqy mods.

 

I agree with the final drive swap but have never seen much for gains from test pipes or HF cats, especially in the lower rpm range. Most TP and HF cats can rob some midrange.

 

low-mid is where I got gains with cats (after tune - it was a slug before a/f was adjusted)... as with all, its a sum of all parts... maybe its the combo of mods I have... but I was on a quest for trq and wasn’t really expecting it from the hfc - I was happy to have the gains...

Prior to cats 1/2" spacer gave moderate trq - and as much as I recommend that mods, for me the hfc and fd made the biggest difference in terms of trq.

Other mods have helped too - but I'm focusing on the topic.

 

nitrous or short gears. generally anything that reduces backpressure will also reduce trq under 3k.

 

False.

 

Cheap: HR y-pipe and Rev-Up airbox.

BTW, if those wheels had shipping weights of 55lbs, that means they're 8 to 10lbs heavier than the OEM 17s plus in the increased rotational inertia and drag. They're slowing you down more than you think. I can tell a difference even after adding my 18" rims and they weigh just a pound more than my 17" setup.

 

Then get rid of your spare in the trunk and you should be good.

 

Not really. Rotational weight /= static weight

 

Dual exhaust with no type of H or X hurts low end power. Especially if the pipes are 2.5" each or larger.

55lbs for each whee/tire is probably near 10lb heavier than oem per wheel. The fact that it's rotational weight makes that effect worse.

UDP would be a okay choice. A 5/16" spacer is another good choice. Getting a magnaflow resonated X pipe would probably better a better choice than the UDP but wouldn't match the 5/16" gains.

 

BTW, if those wheels had shipping weights of 55lbs, that means they're 8 to 10lbs heavier than the OEM 17s plus in the increased rotational inertia and drag. They're slowing you down more than you think. I can tell a difference even after adding my 18" rims and they weigh just a pound more than my 17" setup.[/QUOTE]

+1, I also noticed significate amount of difference (slowing) going from stock 17" to stock 18".