i did a engine swap about half a year ago and my friend just drove my car and said why don't my rpms don't go up as fast as they used to do in his car[the one i took the enigne out of] before in his car they would just go up fast and in mine they take a while to get up and car is slower too only thing i add was a 89-91 intake new spark plugs and wires ,act clutch,and the car had headers when i got it.and the air flow meter was adjusted in the other car but not mine but you have to drill a hole on the top to adjust it and does any body now how to adjust it or it does not need messed with

 

You are confusing me with both your writting and description.

 

ok then the rpms do go up as fast as they use to what would that be

 

Okay, you have a rebuilt s4, with a s5 Intake and you are comparitevly determained to know whats up mith your car considering your friends ride Is faster, atleast as you say In rpm's, right?

Since when do you have to adjust Air Flow Meters? If you have a s5 Intake on your s4 block then you will lose hp before you gain It back at 7000 rpms. Even still, you provide very little description of your friends car. Maybe their Is another factor on why your car Is running like crap.

 

it could also be that ur friend's car had a lighter flywheel than ur car maybe?

 

he said that he got the engine from his freinds car, But in his freinds car it seemed to accelerate quicker and would rev up quicker also.

If you did an engine swap a year ago mabee you should look at giving it a tune up that would help restore its power a bit.

 

i changed the plugs and wires when i got it had autolights and i put ngk and msd 8.5 wires

 

i bought the whole car and put my engine in and sold it. the person that had it before hime had the air flow meter adjusted but you have to drill a hole to adjust it

 

bump

 

his clutch was slipping? you put in a new clutch.

 

before it could beat integra gsr's by a lot and now can beat integra ls by a little

 

any body

 

a

 

 

which intake manifold is better the 86-88 one or the 89-91 because i am thinking of putting my 86 one back on

 

Seriously RX-7fc, this is a totally subjective measure, "well, on my car this was better" isn't a reliable analysis. You may use bigger diameter tires than he did (changes acceleration characteristics), your car may be heavier, or plain out something's wrong, we just don't know.

Best bet, dyno the car before you start f'ing with it and swaping sh*t around.

PaulC

 

i think i have clogged cat and how much would that mess up the cars performance

 

Sorry, I was kinda drunk and could'nt understand what the hell you were saying

 

a lot, rx-7fc have you checked compression? that would be the first thing to check if you feel you have lost power.

 

i put my old intake manifold back on and it seems that it runs better but have not drove it yet and rpms go up faster than the 89-91 intake i had on

 

it feels faster but it can't burn rubber when sifting to 2nd or 3rd gear any more

 

if it's faster but wheels don't slip between gears ANYMORE sounds like more power less torque, did you go from s4 to s5 block? Is it an N/A?

 

i have a 86 n/a and i had a s5 intake manifold on it and now i put my s4 back on and it feels faster but the wheels don't slip any more but now you get that feeling that puches you into your seat but only like from 4000 rpms and up

 

and it feels a lot faster when the temp gauge is up about 1/4 up and when it goes up a little more it feels a lot slower and before it did not do that and it can slip the wheel when it is up about 1/4 up on the gauge

 

bump