Capped at 80MPH??

[Beppe]

for some strage reason. my car has very good power 1st 2nd and 3rd gear. now once i start reaching say around 80 85 MPH my car sruggles and feels like it cant go anymore? i am pushing my limits or what? i would think i could do better then 85. fuel pressure is good, would lazy or faulty injectors do this? also ever since i did a can of seafoam i get this terrible missfire almost like the car wants to stall. then i let off the gas and shes ok. but only sometimes i think it might be coninsidence this is happening now. the spark plugs are clean and not fouled or anything, i am at a loss here.

so far so good. i changed the spark plug wires. even though they were new, i had warranty on them. i'll keep you guys updated

 

[ivatu]

theres another thread about the same problem i have but nobody replied the thing is that i accelerate well but after reaching 80 the car kind of gets stuck
http://www.dsmtuners.com/forums/newbie-forum/302054-capped-80mph.html

 

[architechnik]

What gears are you in while trying to accelerate? You could just be having overall power loss from different sources. Try researching some of the reasons for power loss.

Your profile states that you have a custom intake, but does the new intake have the same sensor setups that are on a stock N/T intake?

 

[ivatu]

well im in third gear wich is like 5k rpms when going 80 also the cai doesnt have any sensor is the one showed at the display picture
can a high fuel pressure can cause this i meen having more fuel pressure than the stock setup?

i noticed that when the car has the water temp in the middle it works fine but when its colder thats when it gets lazy also when i go wot for a long period the temp goes down fast any guess

 

[crimsondragon]

More speed = more airflow = more cooling through the radiator.

 

[ivatu]

i now but it doesnt supose to drop to low even with tha more air flow!!!!!!

 

[Defiant]

No. The thermostat will close up to maintain coolant temperature.

 

[ivatu]

well whats happening the a bad thermostat also does this has to do something with the fact than im like stuck at 80