175Shot4Door

Ok guys so i have a 95 ls integra thats boosted i had a ebay set up with a log manifold on 9 psi and it spun veryyyy hard 2 gear and shifting into 3rd.
I upgraded from the log mani to a nukin ramhorn manifold and from a bent up 2 1/2 inch downpipe to a nice 3 inch downpipe. Now the car is on 8 psi on a tial wastegate compared to 9psi it was on the ebay set up. Car feels slower to me not much spinning anymore? Any idea what could be causing this?

cockerkid008

Did you get the car re-tuned?

GT35R_EF

I'm guessing since you have no power comparisons that it hasn't been tuned since you changed over? That would be something to look at. The log manifold is going to give a little more response early anyways, but you should definitely be making more power overall with your new setup.

175Shot4Door

No i havent gotten it retuned its never been tuned just a basemap. Dyno tunning comming very soon. The car is also VERY quiet now compared to what it used to be. i just dont understand why it would feel a little slower

SovXietday

Just a basemap and you're asking us what your problem is?

$50 says it's lean as hell.

175Shot4Door

i understand that but i dident think a ramhorn and a new downpipe would make it that much leaner

nytosc

iTrader: (3)

Well first of all your on less PSI, secondly you just changed the whole VE of the motor, Thirdly your on a basemap.

All these "basemaps" you see online for sale, are pretty much people who have no clue whats going on and they just burn a similar tune to a chip and make profit.

I would only trust a basemap to get me to a tuner, and it would have to be from someone good like phearable ect.

96 GSR-T

lol x2

OP by your first post it seems like you are trying to somewhat suggest EGAY is better than a well built ramhorn, please stop

So you never got it tuned in the first place with the egay kit? Then you changed your setup still on the origional map that is just meant to drive your car to a dyno to get tuned and created a thread about it not being a tire burner like it was before?

MikeySpec

So you think i shouldnt go ramhorn instead of a log mani? Does vtec hit hard with the ramhorn? Like crazy hard?

96 GSR-T

Is this a joke?

If you can feel some crazy warp drive VTEC engagement then your car isnt tuned right, VTEC should be a smooth transition in power.......

175Shot4Door

Not saying that at all or i wouldent have spent $600 on the manifold...

96 GSR-T

get the car tuned by someone reputable, do you have a wideband on the car?

175Shot4Door

The motor is a LS with a b16 tranny it used to be automatic i hear the automatic cams are different ? Anyone know anything about this?

tegman23

Not to bash but you just said you spent $600 on just the manifold. So you thought a $600 turbo kit, would flow close to what a $600 manifold and much bigger down pipe would..Get the car tuned your new setup is probley way lean...

Jockobo

maybe your rings lands are toast already from the basemap

96 GSR-T

I was thinking this, and then it went even leaner with the ramhorm 3" combo.....

175Shot4Door

i dont think so. Comp is 180 178 179 176. Ive only got into it twice with the new set up. Im sure it just needs to be tuned. In 2 weeks it will see the dyno. Hoping for around 300 on 12 to 14 pounds

Chicas

well you are on the right direction in getting it dyno tuned.

also, make sure your flanges, welds and pipings doesn't have leaks. maybe thats another reason why it feels slower...

175Shot4Door

Im just not gonna worry about it and get it dyno tuned

90blackcrx

Logs ftmfw, I got a new log that routes the wastegate back into the manifold, coming by to test it out on the dynozzzzzzzzzzzz.

OP, your butt dyno is not calibrated.

SovXietday

Consider this. You're coming from a cheapo ebay setup. I've personally seen some of these manifolds have smaller ports than the exhaust ports on the head, lol. Ebay is a lot of things, but it was probably restrictive as hell not even just because it was a log manifold. Also, increasing the size of the downpipe will have a huge affect on how efficient the turbo will be, I've seen some cars walk half a point toward the lean side with just a half an inch increase in diameter and some smoother transitions.

So, you put on a well built manifold with a bigger downpipe. Wouldn't surprise me if your AF walked a full point or more towards danger danger. Either way, you'll never know because you don't have a wideband in the car. Just get the car tuned, if all is well it will wake up no problem then.

Silva Bullit DC4

LOL!!!

Good one Mikey, that was classic! ;-)

HiProfile

So you're an expert tuner or have years taking advanced automotive classes?? A better manifold makes power much easier, meaning you need a lot more gas added. Just 15% more airflow will take you from 11.5:1 AFR's to 13.5:1. That's not only where NA cars start to lose power, that's where turbo motors start to detonate like crazy.

This also assumes your motor is tuned well. A basemap MIGHT get within 10% of the right AFR's, but there's a good chance it was lean in spots already - and you made it FAR worse. As mentioned, if you fubar'd your rings, it will pull even less hard than before.

Your best bet now is to research detonation, do the appropriate checks on your motor/plugs to find it, and do a compression and/or leakdown test. And pray.


Lol, this is like DEI (direct exhaust injection), right? Sounds killer! NO wasted exhaust gases!

Tony the Tiger

The car was untuned, so this thread was pointless anyway...

175Shot4Door

True story i shouldent be complaining about the car without it being tuned.