i was comparing my HP and TQ curves from when my car was stock to after i put my intake and exhaust on it and iv noticed that my curve seams to drop off sooner in the rpm ranges so that my HP starts to fall after like 5000 can someone explain to me why that is and how i can get my HP to extend further down the rpm range

 

Need a bigger pic...but from what I have learned about accords is the 4th gen accords make peak power at like 5200 rpms, versus readline at like 6ish and have you reset your ecu after those mods??

 

ya i did reset my ecu and this link should work to show a bigger picture the picture resized itself when i posted it

http://www.imagestation.com/al...age=Y


Modified by ChaosUnbound at 11:48 PM 1/7/2004

 

this was on a gtech and not a dyno?

 

correct

 

sorry thats the first time I have seen the gtech plot like that... back to the topic.

 

Gtech does not = dyno tuning

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by KGAccord &raquo;</TD></TR><TR><TD CLASS="quote">Gtech does not = dyno tuning</TD></TR></TABLE>

( you read my mind ).

 

The only difference in the graphs from this and a dyno run would be that my cars weight and aerodynamic drag isn't incorporated into the numbers showing me a bigger number I think your just repeating what everyone says and haven't really worked with one as long as the information is interred correctly its more reliable but that's not what I asked for so your taking me off topic

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ChaosUnbound &raquo;</TD></TR><TR><TD CLASS="quote">The only difference in the graphs from this and a dyno run would be that my cars weight and aerodynamic drag isn't incorporated into the numbers showing me a bigger number I think your just repeating what everyone says and haven't really worked with one as long as the information is interred correctly its more reliable but that's not what I asked for so your taking me off topic </TD></TR></TABLE>

people pay good money for dyno tuning for reason. weight and aerodynamics have nothing to do how much power your motor puts to the ground. another thing, when dyno tuning you measure the air/fuel ratio too with a 02 sensor in the tailpipe which helps in tuning. this Gtech thing is not a tuning tool, it is a way to estimate hp and torque which fine, but it should not be considered a substitute for dyno tuning.

 

well i can go to the university and dyno my car for 50 bucks if your one of those people paying 1000+ id start asking around not all people with dyno's advertise and i understand where you are coming from but i just don't agree with you but if it will help get my question answered ill mark out the Gtech emblem and everyone can pretend its a dyno run

 

^ i paid $125 hr with someone tuning it