Its an 01 gsr .felt this way before rebuild,now has itr internals in the head and itr basemap still so slow. It almost stalls when taking off at a light. It just bogs until mid 6000 rpm Any suggestions? I took my cat off,someone punched it out. Could this be why its so sluggish ? 02 not reading right ?

 

Secondary o2 sensors don't have anything to do with how the car runs. It's just an emission sensor. As for it being sluggish, that could be a bunch of things. Start with everything you have changed and go from there. Do you have a stock computer you can throw in to see if there are any trouble codes?

 

FIRST: any codes 2nd "itr basemap" from where and is your engine stock

 

Problem is probably the "basemap." Get it tuned or put a wideband on it and see what's going on.

 

It was like this before it was rebuild no code I'm going to drive it some to see if any come on . I stalled like 20 times today. I'm so mad. It is a p28 from ha motor with a stock Itr base map. The rpm doesn't increase fast at all even when in neutral I'm going to try to post a video soon.

 

Why are you using a P28 if you were already running a P72?

 

Bc I have the p28 chipped with a Itr base map since its is basically a type r head

 

Get it tuned and you should be good

 

are you positive that the cam timing is correct?

did you shave a lot of metal off the head or block deck?

if the above are good it's the tune.

honda maps are extremely finicky with any change in vacuum, throws the map all out of wack

a stock ITR has 23"hg at warm idle. you could vacuum test your engine and see how far off even this is. in order for a base map to have a hope in hell at working you need the same vacuum numbers as a stock ITR

 

try taking the chip out ?

 

better off with stock GSR ECU

 

Yes The cam gears are straight up and the yellow line on the crank pulley is in the mark. I didn't hue the block or head milled. I'm going to test vacuume as soon as I get the gadge. My vacuume lines are all sorts of ghetto lol

 

Take the chip out of the p28 ? Does this mess anything up ?

 

I have itr cams,springs,valves,blox intake manifold. That's why I got the p28 with itr basemap no secondary runners

 

try another ecu

 

you can still run a gsr ECU but even better a ITR on. by taking the chip out you're just running of the ECU so no "basemap" will possibly feel slower but may also help won't hurt anything.

 

guys, if this engine for whatever reason has less vacuum it's going to make any stock map not work. the map sensor is one of the most critical sensors in any speed density motor. if it's programed to see 23" at idle and is seeing 18" there's a big problem. as the motor revs to zero vacuum the entire rpm range will be off in the map

 

i might try a new map sensor too.i have uses the same one since i got the car but changed everything else

 

hear is a link to show you guys my girlfriend blew past me like nothing and let off

 

Didn't hear vtec crossover and saw no "pulling" on your part once(if it hit). what is your compression ? and is your mechanical timing on ?

 

you test the car yet? vacuum test takes all of a few seconds

this is what a bone stock itr engine should run like

 

210 -212 all 4 cylinders what is mechanical timing?

also I don't have a gauge to find out vacuum pressure

 

You should be able to swing down to any auto parts store and get one. They are not that expensive. Get that checked because it sounds like you may have an issue there. Also as stated above I did not hear the vtec crossover. Make sure everything is mechanically good in that department as well and try a gsr ECU.

 

Mechanical timing is the cam gears and the crank check the bottom end and head are both at TDC

 

Check timing and the Map sensor. Also make sure the tps and map plug is not switched, i just fixed a guys car that had those switched.