Fuel Cut Off Manual IS Question and a Top End Run with WRX.
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the car finally went over the 1k mark after 2weeks. so i decided to test out the fuel cutoff but as i'm getting ready to open her up i see a blue rex coming fast from behind. i'm going 80 in 4th and he blazes by me so i play a little catch up and d/c rev-match to 3rd get it up to 100mph and i see he's slowing down. i pull up next to him letting of the throttle in 4th and were side by side @82mph. i look over and he gets the jump and i d/c r/m to 3rd again and i'm off where he has 3/4 car lead. 85-86-87-88-89-90-91-92mph i bump the limiter @6400. WHY? shift into 4th and this is where the reeling begins, by 100 i pull nose to nose and by 120mph he's a good 6 to 7 cars back so i take it to cut off again and it stops at 6400rpms looking at the speedo its 125mph. i look back and the scoobie is still there so i let him catch up to get a 2nd run. were side by side again @100mph so i shift back into 4th and i let him get the jump. he puts another 3/4 car lead but again i pull next to him by 110 and by 120 i'm 3 cars ahead. i see my exit about 1/2 mile ahead and i slow down to look at him and he doesn't look back. oh well!
the rex was defintely stock and stock rex's have horrible top end but get enough mods and it'll pull like freight train. anyway i was surprised at 6400 cutoff. i thought i remember seeing a post in is300.net that said that the IS cuts @6700. not only did it take me awhile to get used to shifting early but now it cuts 200rpms past redline. where i was so used to having 600rpms to play with after redline in the gts.
the rex was defintely stock and stock rex's have horrible top end but get enough mods and it'll pull like freight train. anyway i was surprised at 6400 cutoff. i thought i remember seeing a post in is300.net that said that the IS cuts @6700. not only did it take me awhile to get used to shifting early but now it cuts 200rpms past redline. where i was so used to having 600rpms to play with after redline in the gts.
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Originally posted by SDuquette
is it manual or auto, since your sig says 5 spd? If it's manual, I'll test it out
is it manual or auto, since your sig says 5 spd? If it's manual, I'll test it out
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Last edited by TRD04IS; 05-16-04 at 04:52 PM.
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Originally posted by Turbo'd_Wxman
You were bouncing off the rev limiter. I would not recommend doing that very often or you will be saying bye-bye to the engine and hello to some serious $$.
You were bouncing off the rev limiter. I would not recommend doing that very often or you will be saying bye-bye to the engine and hello to some serious $$.
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so you're saying ~120-125 was your top speed?
maybe it's a gearing difference between the manual and autos, but i've taken my car up to 135, it did not hit the limiter yet, but i was a bit scared so i let off the gas.
maybe it's a gearing difference between the manual and autos, but i've taken my car up to 135, it did not hit the limiter yet, but i was a bit scared so i let off the gas.
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Its cool if you don't believe me, but it is a fact. The IS300 will rev out at 6500 rpm. You mustang probably had a governor which is completely different. The IS300 can back off timing or play with the fuel on rev limiter.
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Originally posted by irv_usc
so you're saying ~120-125 was your top speed?
maybe it's a gearing difference between the manual and autos, but i've taken my car up to 135, it did not hit the limiter yet, but i was a bit scared so i let off the gas.
so you're saying ~120-125 was your top speed?
maybe it's a gearing difference between the manual and autos, but i've taken my car up to 135, it did not hit the limiter yet, but i was a bit scared so i let off the gas.
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Originally posted by Turbo'd_Wxman
Its cool if you don't believe me, but it is a fact. The IS300 will rev out at 6500 rpm. You mustang probably had a governor which is completely different. The IS300 can back off timing or play with the fuel on rev limiter.
Its cool if you don't believe me, but it is a fact. The IS300 will rev out at 6500 rpm. You mustang probably had a governor which is completely different. The IS300 can back off timing or play with the fuel on rev limiter.
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didn't have mustang but a 00 gts 6spd that had a redline of 7800 and didn't cutoff till 8400. god knows how many times i've bumped the limiter and 4yrs and 53k never had a problem. with the IS is the fuel being cut or is it engine ignition or both?
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Originally posted by TRD04IS
don't know about that. i've bounced off the rev-limiter in my gts over a thousand times and never had a problem with it.
don't know about that. i've bounced off the rev-limiter in my gts over a thousand times and never had a problem with it.
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Originally posted by TRD04IS
with the IS is the fuel being cut or is it engine ignition or both?
with the IS is the fuel being cut or is it engine ignition or both?
BTW, the powerband of the 2JZ is not near redline unlike the 2ZZ.
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