04goatman

I have comp cam XR275hr-12 @.50 duration 222/224 566/568 power band from 1800-6800 rpm(mid. to high range power). I have 2800 stall , I am thinking of taking out the 2800 stall because I rarely go to the track & have no need on the street driving I do all times and have yet to go to the track since the mods. My questions is if I remove the stall, what is the low end power launch going to be like with just the cam ? Will my low end power be similiar to stock cam and Will I loose alot low end power since the cam I have is for mid to top end power w/o the stall? Does anyone know stock LS1 cam low power band start at ?

Should I keep the stall in ?
All opinion appreciated.

Hell'sChariot

iTrader: (24)

That cam will stop pulling probably around 6k. You will be perfectly fine with a stock converter, since that is a relatively small cam. I have a question, why take out the 2800? It has to have near stock like street manner, plus give you alittle extra thrust on take off. I have a ss4000, and I only see maybe 2500rpm in intown driving.

04goatman

I am thinking of using this car as my daily driver soon and as you know the gas prices are out of control now and will not get better. I am only getting 9.8 MPG I only work 7 miles away one way with stop & go traffic. I didn't think I would loose 4 MPG with the mods. Least with the stall out I am guessing I will gain least 2 MPG But this is just a thought not definite yet plus having insurance & maintenace on two cars isn't cheap.
With the stall out, will I loose low end power from start but gain it back once i hit the mid to high rpm range ? or is it similiar to stock launch?

transamfreak01

iTrader: (8)

the cam is not going to get its full potential with a stock stall. it can be done but it will be a dog. if anything i would up the stall. i have a yank ss3600 and it drives like stock. i cant even tell theres one in the car until i hit the gas. imo i say at the least keep it if you dont want to go bigger

Hell'sChariot

iTrader: (24)

WOW! Is your car ok? You are getting crazy bad gas mileage. Im sitting at about 14-16mpg and thats with a cam and a ss4000 verter. I know the goats are heavier, but wtf. What are all your mods?

04goatman

See below for my mods. WOW you're getting 14-16 MPG with even bigger stall than mine. If I even get 11-12 mpg I would be content but I don't know why I am getting such a shitty gas mileage. Is your mileage city driving stop & go traffic or is it combination of highway and city or just highway driving ? Any idea why I am getting such a bad gas mileage ? I need to take the car back to the tuner to fine tune it I wonder if i should try a different tuner. The guy that did my mods & dyno tune is very knowledgeable & knows his stuff but I don't want to wind up wasting $300-$500 if I take it to another shop & they can't do any better.

Hell'sChariot

iTrader: (24)

Its all city, I drive little to no highway. What mph are you locking the converter?

Do you know what your afr is? It should be around 13.1. Cause it sounds like it could be running fat.

04goatman

No I don't know what my afr is. I will find out,I don't know what mph my converter is locking. How do I find out ? At stop with my left foot on the brake and right foot on the gas the tire starts to spin at 2200 rpm if that helps. What mph is yours locking at ?

Hell'sChariot

iTrader: (24)

No thats not locking that would be brake stalling. Locking would be the eqvalent(sp) of putting the car into 6th gear on a m6. Mine locks @ 40mph. It should feel like the tranny is shifting gears although its not and then the rpm drops to around 1400-1500 rpm. If the converter is not locking, then that would explain your horrorible gas mileage.

04goatman

So at 40 mph your rpm is 1400-1500 rpm ? I will see what my rpm range is at 40 mph tomorrow.

Hell'sChariot

iTrader: (24)

Yes. Thats when mine is set to lock. And thats why I get good mpg, cuz when it is locked it is the same as stock.

04goatman

So then from a complete stop when you press the gas all the way down,does your car not launch like it should until it hits 1500 rpm then it launches from that rpm ? What cam do you have in your car ? If i have my converter lock up at 40 mph since my cam is 1800-6800 rpm cam ( mid to high range),will my low end launch be slower than if it had stock converter ?

Grimes

iTrader: (3)

I would focus on making sure your tune and sensors are spot on, and keep the converter you have now.

Hell'sChariot

iTrader: (24)

If I mash the gas, the converter will throw the rpm to 4000+ instantly.

And the lockup feature has nothing to do with launching the car.
Once I get to 40mph it will go into "lockup" mode and the car will act like I just shifted into overdrive, and the rpm will drop, you are now "locked".

You will launch better with the looser stall and better tires. Your cam will not pull to 6800rpm, maybe in an m6 but not an a4.

Also check and see what rpm you are doing cruising @ 40-50mph. You should be around 14-1600rpm if you are locked properly.

Btw I have a tr224 112 for now, but Im about to order a tr230 111.

Keep us updated.

04goatman

at 40 mph my rpm is 1200-1400 rpm. The tuner says my stall is set up to lock like the stock one 3rd & 4th gear. If your stall is set up to lock at 40 mph, when the speed reaches 40 mph & stall locks up would be like in 3rd gear when it is locked at 40 mph ? Sorry for all the newbie questions but I am trying to learn.

Hell'sChariot

iTrader: (24)

Well if your rpm is 12-1400rpm @40 the verter is locked. If its got the stock lock points you'll be fine.

Did you find out what your afr is? I will be on your dyno sheet.

04goatman

No, I do have the dyno sheet in my car. I just dropped off my car at the tuner's house tonight. I will be picking my car up on saturday when I get back in town. I will look then and see. I am hoping when I pick up my car saturday, my tuner have solved the poor gas mileage problem. I will let you know when I pick up my car saturday.

therealthatguy

iTrader: (23)

sell it and buy a civic if you're worried about 2 MPG......