How do I increase low rpm power in my car?

Question

I want to do it without a turbo or supercharger. I have a honda prelude 2000

Answer 1

If you are going to do it with a turbo or supercharger, you'll want the supercharger. Turbochargers don't increase low end, due to the fact that they kick on at a certain RPM. However, the turbocharger would let you have better gas mileage, becuase the supercharger is running full-time.

Answer 2

If you have a prelude and have the H22 DOHC VTEC engine then you have plenty of torque, so you should be good on low end. But you probably dont have the h22 in there then??

But there is no simple answer for this, to gain low rpm power the best answer is a supercharger since its always on the go no matter what (ran by belts) and vtec engages at late rpms

For a turbo, it needs to spool up so its better mid-late rpm range.

Now since neither of those are in the cards, I can only suggest getting a header that is 4-2-1 design. A shortram intake, and catback exhaust when you can get it.

Getting some MSD ignition will give you better throttle response for low rpms. Also if you decide to get a chip, dont mess with the vtec engagement. Just because VTEC is extended DOES NOT mean its faster, it could and will most likely slow you down. I learned that from experience. Another thing is reground your engine ground wires.

This is the best mod hands down, it smooths the idle, ride, and performance of any car. Not much, but it SMOOTHS everything out.

Good luck on the build mayne

Answer 3

Ok now that everyone has said dumb sh*t. Let's get into the nut cutting.

Cheapest bang for the buck is N2O (nitrous oxide) Cheap fogger kits ad 50hp easy. Not the best for the motor, but how long do you plan on owning it and how often are you going to squeeze?
When done right these things are fairly safe to run.

I would not run NOS unless I wanted massive cheap power on full throttle acceleration only. What I would do is:

Add power in other ways; look at small primary sized exhaust headers, a highflow catalytic converter (or a gutted one for track only), Combine this with small exhaust like Apexi word sport. and an intake with a good filter or even a drop in from K&N.
If you retain the factory airbox there are many mods you can do to improve the flow without eliminating the fresh air channels.

Beyond this maybe look at lightened flywheel / clutch combo. It makes the car seem more powerful and put more to the ground. Or even poly motor mounts or inserts.

Don't mess with the ecu unless you put cams in.

These are the basics of tuning and should result in a better performance feeling car with same reliablity as stock.

KC

Answer 4

Ok let me correct the above answers.

1. 9/10 times an exhaust is going to decrease torque throughout the powerband. however you will see small gains above 6500rpm. Intake will help but again you will only notice small gains if any. Typcailly a "chip" or some kind of piggyback system is only going to richen your Air/Fuel Ratio causing you to have lower fuel economy. Though if you use a piggyback such as the APEXi VAFC unit that is properly tuned on a dynomometer you may increase fuel economy by leaning out your mixture, this is usually only done when you have light modification.

2. A camshaft with a lower profile may create low end power but then you are going to starve the H22A of oxygen anywhere over 3000 rpm. S that will not work out. Regardless of you having VTEC or not (since you have a 2000 model you have VTEC) the low cam profile will kill performance on top. Like I said before anyhting over 3k rpm will be substantally reduced. It may even cause the car to stall at high rpm.

3. Dropping in a Hemi, ya that would solve your problem but I doubt you have the money to persue this kind of modification required to make this work.

4. On of the better answers so far however using a Supercharger or Turbocharger is most likely going to reduce your fuel economy also. Since increased fuel pressure/quantity is required to maintain a proper Air/Fuel Ratio throughout the powerband to prevent knock/detonation.

I have been building Honda motors for a couple of years now and it is common knowledge that if you want low end torque on Honda your best option if not your only option is a Supercharger. This is going to provide the best amount of low end grunt for your @ss dyno to appreciate. This is also a expensive option.

However with the newer technolgies of today thanks to dual ballbearing and ceramic coated center cartridge turbos. Low end torque can be achieved this way also. However duel BB turbos are quite expensive. Some times more expensive than a supercharger kit. However you are going to see better numbers proven at your local dyno with this kind of setup. You may even appreciate this better.

But like I have said using a supercharger or turbocharger is going to reduce fuel economy in some aspects.

Fuel economy is mainly effected by the drivers driving habits. If you can keep your lead foot of the accelerator then you may find yourself going further on your next tank of gas.

The reason Honda valvetrains put out such little torque to the fault of 2 things. Low displacement and short stroke. A long stroke would give them more displacement (given that bore stays the same) and more torque. Thats why the NIssan Sentra Spec V creates so much torque, 185lbtq if I recall correctly.

I hope i have helped you in your quest to to increased torque and correcting the above answers appropriately.

Answer 5

having a different camshaft profile with less overlap and higher lift will get you more low end power. But do know that by doing that, you will loose high end power since the overlap is not much.

ALso advancing your ignition on the distributor will improve your low end response, but again, too much advance will promote detonation at high rpm or heavy engine load.

Your best bet is to get the right cam profile in your prelude and since you have Vtec you should be okay on the cam lift at high rpm

Answer 6

in case you're taking a inventory vehicle with an similar set up and one has a guide and the different has the vehicle with the shift equipment, the guide will nonetheless win using equipment ratios in the transmission. To get an computerized to conquer a guide means sacrificing the flexibility of the motorized vehicle to handle driving round on a common day after day foundation because of the tremendous stall that you'll set the converter up with. in case you want to construct a drag in trouble-free terms vehicle, ninety 9% of them are equipped with an computerized transmission because it is amazingly predictable and also you'll set the transmission to do almost an similar run each and every time. Its some distance more beneficial troublesome for acontinual of a guide transmission to tug off a consistant run again and again. to precisely answer your question besides the undeniable fact that, certain, a driver of a vehicle with a shift equipment ought to conquer a vehicle that had a stick if the driver sucked. yet nonetheless, a driver of a Yugo ought to conquer a Ferrari if the driver of the Ferrari wasn't very solid.

Answer 7

There really isn't anyway on a Honda to just increase low end power, However, torque can be increased with exhaust intake and chip. which will give you some extra low end power with much more on the top end. With the smaller displacement engines that is how they work its all low torque high horse power. Good luck hope this helps.

Answer 8

Underdrive pulleys are cheap, around $130, and increase power all the way through the rpms. Thats a gain in torque and hp from idle to redline.

Answer 9

Providing you have nothing better to do - there are aftermarket camshafts with changed lift...

Answer 10

get a new computer chip like Denon, that will change the fuel mixture in the engine to produce more hp/torque