cliff

is there anyway to do it? the TL was dynoed and it showed the car still making power until the rev limiter kicked in, if it was removed, we would get more hp.

im just asking about this, i have no intentions of doing this, at least not until my warranty runs out, so i dont want to hear people flaming for all the "this car wasnt meant to be.."

thanks
Cliff

rets

Rev Limiter = 6800 PRM cut-off?

Or you meant "the ECU cuts off fuel flow to the engine if there is danger of over-revving the engine. The transmission will upshift itself to prevent engine damage in the rare situation where the fuel cutoff alone is unable to prevent further engine over revving (as could happen on a steep downhill). "...

Aegir

Speculation until proven, but it certainly looks like there could be another 300-500rpm or so of near peak power. Probably harder than just removing the limiter - I'm guessing the fuel and timing maps probably don't extend beyond the current limit.

I'm with you, I wouldn't touch the ECU for a few years.



Oh, and as rets mentioned, 5AT programming to contend with too.

93SHOcar

I would definitely want to know the weak points that the rev limiter was designed to protect before changing it. On my SHO, the Yamaha motor was well known to be able to support much higher RPM's but the wear and tear on the accessories was the issue. By switching to underdrive pulleys along with some other mods that would take advantage of higher rpms, I felt comfortable going with a modified limiter. However, this was all done after factory warranty was over.

cliff

the J32 engine is definitely capable of higher rpms, i think one of the reasons they limited so low is because they dont want the hp exceed NSX's 290hp engine?? anyone agree with me?

bluenose

Peak horsepower at 6200rpm - Rev limiter at 6800rpm. Power already falling off after 6200 why rev it any higher?

Aegir

My car makes peak power at 6800 - and still rising at the limit. I know 6200 is the published peak, but the dyno is telling a different tale.

achonda2_4

Corret me if I am wrong but my TL is on 7000 rpm. When racing, I shift exactly at 6900rpm.
Is there anyway I can move the limiter to aout 7400 or 7500 rpm?? Thanks

caball88

yup the published figures not exactly the engine is capable of. TOV dyno'ed a 6MT and it was pulling hard past 6200 but the dyno had a little blip in it which indicates that the ecu probably cut power to it early. its speculated that the engine is capable of another 15hp at least. i figure that the engine was limited due to ulev2 requirements.

pettydw

The two technical things that normally decide the rev limit are valve float and crank shaft torsional critical speeds (that is, if Honda does not other motive like NSX HP). The valve float would be measured using experienced springs by the factory (springs lose preload over the miles), so new enignes may not experience a problem by extending the rev range. Crankshaft torsional issues can crack the cranks fairly quick, if left at or near a critical speed.

ryder1650

The new RL is 300 hp...

cM3go

but it also has a 3.5 liter engine

achonda2_4

300 hp but heavy as heck.

dougpt10

Totally agree. How can you have your $30,000 TL produce more horsepower than the NSX supercar?

caball88

the nsx is much lighter than the TL and handles a whole lot better.