I am so lost. I originally had a real slow ek coupe automatic. I got sick of it but decided to go all out and build an all motor car. I had a friend of mine build me an ls vtec and im positive everything was put together correctly. I bought the dc sport jdm 4-1 header with the 2 1/2" collector, an aem cold air intake for the integra type r, went with p30 pistons, etc. I had it for a while but wanted more so i got a set of skunk2 stage 2 cams, skunk2 cam gears, fuel pressure reg and gauge, had my throttle body bored out to 64.2, got some rc 440 injectors, purchased hondata, had it all tuned and dyno'd by a place in tampa called secret services. The car dyno'd at 187.8 max hp and 134.7 max tq. I was a little disappointed by the numbers ( i was hoping for 200) but i have heard that those numbers are pretty good. My low end tune is all screwed up and sometimes i have to push the gas pedal to make it start. I wanted to take it back to the tuning place but after i spent almost $1000 they have now closed down. i have talked to so many people and have heard so many different things. Well of course i still want more power and have purchased a toda header, type one exhaust (to replace crappy dual exhaust) and have had headwork done by tom at port flow (multiangle valve job, port and polish, milled head .0020. Although the last three things are not on the car as of yet, i went down to the 1/4 mile track and was extremely disappointed. to begin with i have horrible starts (partly attributed to my crappy low end tune, partly to my crappy driving skills) my 60ft times ranged between 2.6 and 2.8. . my best time was 14.9 and 94mph. I came there expecting between 13.7 and 14.2. i know that i can knock off almost a second with better starts. The tires either spin or slam on the ground shaking the entire car. or if i start too low then the crappy low end tune kicks in and the entire motor just bogs out. I plan on driving to south carolina to have r+d motorsports put on my new head, header and exhaust and retuning, but i am just praying i wont be disappointed. My biggest problem is that i know someone who has a lsvtec in a integra with lower compression pistons, less agressive cams, no bored throttle body, etc... and he is running a 13.6 . I am starting to hate all motor. someone please slap me in the face and then tell me what to do!

 

well one of the problems is your ginormous throttle body. Youre packing more air into the cylinders, but its acceleration is much slower than a 58-60mm throttle body. Thats one of the reasons your low end is suffering.

 

I think that your injectors are too big for that 270, 310 max. might be filling up cylinders with fuel you cannot burn. i know guys running boost on 310s

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by hybrid98 &raquo;</TD></TR><TR><TD CLASS="quote">I think that your injectors are too big for that 270, 310 max. might be filling up cylinders with fuel you cannot burn. i know guys running boost on 310s</TD></TR></TABLE>

hes got hondata so the size of the injector doesnt matter, you can make single cam run on 900s with hondata, i do agree with LsVtec92Hatch, i think many people run tb's that are too big for their setups, but unfortunately if you switch to a smaller tb its gonna throw your A/F all off.

 

Ok well i guess if my throttle body is too big there isnt too much i can do there except go back to stock. How much of a difference will this toda header make? how much of a difference will the exhaust make? Like i said right now i am running the dc sport jdm 4-1 with 2 1/2" collector. Let me explain my exhaust more. It may be holding me back more than I think. The exhaust is only 2 1/4 " all the way back and it splits into a y-pipe right at the right rear tire. It is pretty free flowing (no cats no resonators etc) but like i said it goes from my 2 1/2 inch collector immediately into my 2 1/4 exhaust. The exhaust I purchased is the jdm type one also known as the t1r. The exhaust can be seen at randdmotorsports.com. And how much of a difference will all my headwork make?? (multiangle valve job, racing valves, port and polish, and the head has been milled twenty thousandths. I know that all you guys hate hp questions..... But if i am at 188 hp and 135 tq, with these add-ons that i have listed where should i expect to be at????

 

you shouldnt worry about the exhaust. thats not whats holding you back. i think its too much fuel, and a throttle body thats way to big for your setup.

 

yeah thats a good exhaust i dont think thats the problem, sounds like you just need to try to retune it

 

so i shouldnt expect a big difference with retuning and the toda header and new exhaust and all that headwork?? did i just throw away over $3000??????

 

the toda header is a great piece, i was able to almost make 200whp on secret services dyno with it, but i only had ITR cams and pistons

milling the head could hurt or help you, stage 2s like alot of compression but sometimes when you raise the compression you have to pull timing out

 

i am considering driving to r and d motorsports in south carolina for a retune and putting on all those parts. Now that secret services is gone. is that my best bet or is there someplace just as good or better locally?? I heard about someplace in orlando. My end goals here are to be in the low 13's.

 

are you sure SS isnt just moving the shop?

 

john closed up the shop. he bought a cobra thats how out of it he is. Id like to see the car hit 215 hp and hit real low 13's. am I being realistic with a good tune???

 

with 215 hp and some good launches, youd be seeing high 12's.

 

well keep in mind that this is an ek coupe and it also has a body kit on it and 16" wheels. My real question was if 215 hp was a number to expect after adding the header exhaust racing valves and headwork.

 

Not to be a dick but the first guys exhaust went from a 2.5 collecter to a 2.25 bottleneck, wouldn't that make a large impact or no?

And radeoncali you need to tune if you want to see more gains after major modifications like that.

 

whats cnc drag ported??and also WTF??stock gsr exhaust manifold?..but 16's in a 91 hatch..ouch...u couldve done that with a d series in there

 

so.......is 215 hp expectable or no????

 

i would say no, unless your tune right now is way off, do you have a dyno sheet?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by radeoncali &raquo;</TD></TR><TR><TD CLASS="quote">cnc drag ported , i guess where the vavle guilds are cut down in the port runners and the ports are opened to the fullest!!!!!!! ..


I had a set of dc 4-2-1 headers from a friend when i ran the times at the track.....</TD></TR></TABLE>

yeah who did that cnc stuff???so u didnt have exhaust flowq problems then...?

 

yes i have a dyno sheet. I emailed it to a guy at r+d and he said my top end was pretty good but he thinks he can get a little more out of my midrange. so did i spend $3000 plus tuning to probably only hit 200 hp? thats a gain of 12 hp for 3000. not very good