OK i did many searches and only found this...and it wasnt even resolved.. so im going to ask it agian.

https://honda-tech.com/zerothread?id=216981

Ive got a 98 Prelude Auto, definitly has some type of fuel cut off limiter around 120'sh... I have a VAFC, and am wondering if you can program it to get rid of the limiter, and if not, besides Hondata and expensive methods of having it removed, is there a cost effective way to remove this thing... Seriuosly theres like no power at 120 in 4th gear at 4,000 RPM. Just need a solution, not that I will be doing the full 150 but its nice to say you can, and on occasion theres road tracks and abandon airports in TX.

Anyways please someone help me resolve this.... i heard something about prospeed knowing how to remove them....

Please help!

 

The SS will get you to somewhere in excess of 140 with time. If you are looking at it from an acceleration point of view (drag) the computers were not designed and programmed that way. I suspect that you may have an issue with 'limp mode' if you cannot get over 120. The USDM cars are all capable of this versus the JDM-they do have a lower mph limiter. We assume that you have checked for codes. You also make no mention of mod's or mileage on the car. For that matter, unless you are the original owner-are you sure the tranny has been reverse flushed recently? A VAFC does not control speed directly.

Hope this gives you something to work with.

 

I dont think there is anything wrong with his car. I have an auto lude and though i dont often get it there 120 comes pretty quick but the car hasnt got **** after that I think i posted about this a long time ago but never got a straight answer. I think its exclusive to the auto's though b/c i hear of guys toping out their stick ludes all the time.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ItalynStylion &raquo;</TD></TR><TR><TD CLASS="quote">I dont think there is anything wrong with his car. I have an auto lude and though i dont often get it there 120 comes pretty quick but the car hasnt got **** after that I think i posted about this a long time ago but never got a straight answer. I think its exclusive to the auto's though b/c i hear of guys toping out their stick ludes all the time.</TD></TR></TABLE>

I'd bet it's between the torque lost through the AT and the taller gearing of the transmission, if it's truely only at 4,000rpm @ 120mph. It's been awhile since I've gone stupidly fast in my 01 5sp, but I think 5,000rpm for me in 5th was around 100mph. That's a huge difference in gearing.

While an MT 5th gen can get all the way up to redline in 5th, it certainly doesn't have a lot of pull up there. Giving it taller gearing would certainly kill momentum as wind resistance picked up.

 

i hit 130 in my auto 4th gen

 

Im almost certian its a fuel cut off... my 4th gear starts "when redlining the way there" at 100-110 and then its like i have no 4th gear on the car.... itll accellerate somewhat, but then itll only hold the speed, no more acceleration.. Im almost certian its like a fuel cut off, but very well could be the gearing on the 4th. I have no CEL's and I have the fluid changed with honda fluid every 30k. The car has 107k miles and is in perfect running condition with all scheduled maintanence.

Either its because i have a piece of **** auto, or because there is a limiter.

Either way id really like to get this figured out, on behalf of anyone that ever needs this information also.

Its not that Id like to try 150mph.. its just id like the car to perform how it truely can.. why have a set of guages that say 150 when you know it cant even get near that because of some program, if it is a program that is.

It feels like theres no more fuel or not enough torque to push the gear any.. but what confuses me is when im accelrating in 4th itll pull hard until it reaches just around 110-120... preludes are geared for the highway more than the street in my opinion.

I really do think the USDM Automatic 5th gen preludes have a limiter, correct me if im wrong please.

 

I think you need to try another top speed run in 3rd gear. I've experienced the same issue in my '01 SS in 4th gear. The engine just doesn't have enough power around 4000rpm to accelerate in top gear. However, if you really push against the redline in 3rd gear you can get past this point, and keep accelerating in 4th gear. I've been up to 135mph in my car, and it would have gone faster if I had more road to run on.

 

I was thinking about how sucky this speed limiter is a while back...but when I thought about it some more..damn I prolly will never even go that fast, not on freeways/streets, and theres just no way in hell I'll even go past it in the 1/4, not even close...but then again I know what you mean about how your gauges says 150 yet it can't be done which of course sucks cuz you know it just can't do it.

 

ok, this is sad guys, out of all the people in here, no one knows this???

OBD II = fuel cut @ 120. End of story. Boy that hit 135, your car was either chipped and you didn't know it, or Honda gave you a un-governed computer. ALL 5th gen preludes cut fuel at 120. Wouldn't want us to outrun the cops now would they? Motor trend said it would do 143 mph and the type-r would do 149 mph but I doubt they were driving cars from a dealership, Honda dropped them off without governing for test purposes is my bet.

EDIT: My OBD1 accord would do 137 mph with the 145 HP f22b1 vtec 2.2l, that car was a highway killer for the kind of power that motor made, once I switched over to the h22a1 I lost my top end gearing with my 15" wheels, I don't think I ever made it over 130.

 

Are you saying that all 5th gens(auto or standards) have the fuel cut off at 120?
That doesnt sound right...For the autos's i agree, but i dont know about the standards. Also, how can you take off the 120 fuel cut?

 

lol not all 5th gens have a fuel cut. I just dont think it can be done with an automatic. between the gearing, wind resistance, all the other factors, the ECU just will not let it happen. There is no way around it eaither unless you do a 5spd conversion.

 

I have a 2000 sh and it WILL not go past 120, and it pulls very hard to that point. just straight up stops at 120, like it hit a brick wall. SH's only come in 5 speeds as you know, so why does it stop? And also my girlfriends accord was in the 96-97 generation and mine was in the 94-95 generation, mine OBD 1, her's OBD II, mine 137 mph, her's 115 mph, with power, but again, brick wall effect.

 

My car tops out at 127.. I think there is a limit on it.

 

damn, this is just another reason why i need to get rid of this auto tranny

 

I have a jdm h22 5spd with hondata...obviously the limit is off, but i can get up to 140 easily, its at about 6000rpm in 5th gear. At this speed my car still has power..and it could definitely go faster. My prelude is turbo'ed but I did this when I wasn't boosted.

Since I can go up to 8000rpm I could probably make it to 150, but never and probably won't try it.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ItalynStylion &raquo;</TD></TR><TR><TD CLASS="quote">damn, this is just another reason why i need to get rid of this auto tranny
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same here

 

Strange, my '01 has no problem pulling up to stupid speeds, and it's totally stock.
I've never heard of limiters on USDM preludes, just JDM ones...

 

Im not sure if this is relevant but i found this and thought it sounded right...
http://auto.howstuffworks.com/...5.htm

 

i bought my 5th gen 5spd from a honda dealer new and ive got it up to 240 km(150mph) its gutless at that speed but it might go a bit faster

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JadedGamerX &raquo;</TD></TR><TR><TD CLASS="quote">ok, this is sad guys, out of all the people in here, no one knows this???

OBD II = fuel cut @ 120. End of story. Boy that hit 135, your car was either chipped and you didn't know it, or Honda gave you a un-governed computer. ALL 5th gen preludes cut fuel at 120. Wouldn't want us to outrun the cops now would they? Motor trend said it would do 143 mph and the type-r would do 149 mph but I doubt they were driving cars from a dealership, Honda dropped them off without governing for test purposes is my bet.

EDIT: My OBD1 accord would do 137 mph with the 145 HP f22b1 vtec 2.2l, that car was a highway killer for the kind of power that motor made, once I switched over to the h22a1 I lost my top end gearing with my 15" wheels, I don't think I ever made it over 130.</TD></TR></TABLE>

Do you care to back this up with any real evidence?

OBD standards are set by the federal government, and are geared towards emissions and quality. Speed limiters are not part of the package.

I've spent some time around OBDII systems, and there is no limiter associated. All manufacturers have some kind of electronic limiters, but not part of OBD.

 

Well today my friend got a flat tire 40 miles west of Weatherford, Texas and since he had no jack or tire iron i had to rescue his ***...There is nothing on I20 between Fort Worth and there and the road is empty except for maybe a few cars so i decided to test this 120mph speed limiter myth...

Well its total bull crap b/c i hit 134 in my auto. I do know why it seems like there is a brick wall at 120 though, using Sport Shift if you shift out of 3rd just past redline it should get you to 114. But once you are in fourth the Vtec doesnt overlap from 3rd to 4th gear so the power really falls off. 120 ish is almost Vtec and once you get past that point it has plenty more left. I quit at 134 b/c i didnt want to die and was just trying to prove a point

 

P.S- My ECU isnt chipped and im running no type of engine management...
Performance wise the car is all stock, for now.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Eightfuns &raquo;</TD></TR><TR><TD CLASS="quote">i bought my 5th gen 5spd from a honda dealer new and ive got it up to 240 km(150mph) its gutless at that speed but it might go a bit faster
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Same here. 150 MPH Bone Stock. Scrap the SS bro. That 5 speed tranny is essential if you want to get serious about import tuning.

 

no speed limiter. something is up with your motor, or your body kit drag limits you to 120

 

my bros SH has pegged past the 150 mark a few times i still dont have the guts to see if my 5speed swap will do the same or better every time i get stoped for speeding i go to jail