Hey guys I need some help. I am trying to get a rough idea of what I can expect to be making to the wheels if I get some S3 cams, Jim Wolf ECU and a nice tune.

The car is a 99 Sentra SE-L with 230,000 mile on her. She just dynoed 150.8 HP / 141.6 FT lbs torque to the wheels.

The mods are Jim wolf 9 lbs flywheel, UR pullies, Injen CAI, SSAC header (early version with the 2.0 secondary) , mandrel bent 2 1/4 exhaust with high flow Magna Flow cat going to Magna Flow resonator on out to a Magna Flow muffler. Timing is set to 15 degrees.

Car has nice pull but I want more. I use her for auto cross so I am always looking for low end torque and mid range power. Let me know what you guys think. Thanks

Also not sure if it will affect HP or Torque but I am also getting a B15 SE tranny soon.

I think I saw some charts from someone.. and based on your first numbers you'll probably pull in around 165-170.. maybe.. with a 2.5 inch header. You might want to look into some adjustable cam gears too.. I added it into (advanced intake cam 2.5 deg) the mix and it feels like the most hp/tq was freed up in the lower/midrange end with the mod.

My setup:

Injen CAI, 91 intake/exahust cam, jwt adj. cam gears (2.5 degree advanced intake cam) Hotshot gen 3 header w/ stock exahust, 17 degrees timing.. autotragic :( 99 sentra SE with 95k miles. Also ... ad22's and tein ss suspension)

As of now the car feels a little jumpy, but with the auto trannie it requires a "special" type of finesse on occasion. Pulls like crazy on the highway... no more flex fuel cars ***** cut me off.. bastards.

What I'm wanting to do now with my car is .. calum ecu, more suspension mods (rear strut tower bar)

I added each mod one at a time and I've found the best "seat of your pants" mod would have to be the cam gears (even if I installed them w/ the intake cam) I can't tell you how much it will improve the rpm's in the low end. I'm also considering switching to the WAI to see how it does the midrange/upper end.

Well suspension wise I have Hyperco gen 2 springs with AGX struts. Koni bump stops with Motivational engineering rear plates. Progress sway bars front and rear. Stillen G load brace and Strut tower bar in front. Unknown rear strut tower bar. Beam in rear is bent to 0 toe. Brake wise I have the AD22VF brake upgrade with power slot rotors all around. SS brake lines and AXIS ultimate pads.

I feel that the 2.5 in exhaust is unnessary for what I am trying to get out of the car. 2 1/4 Mandrel bent is plenty smooth and big enough to get the exhaust out of her. IMO Now the cam gears I had not thought of. Interesting.

I played with the CAI/ Short ram and I know I felt less low end mid torque with the short and more with the cold. Now up top the short ram seems to pull harder but I mean at the very top of the power band.

I had a auto sentra with the GA16DE in it. I loved that car for what it was and I drove it hard. I understand what you mean about how there is a feel to how to drive it. There really is. You have to learn what the trans is going to do depending on what speed you go.

I do love manual though on time I dont like it is when I am whiped out and dont feel like shifting.

So anyone else have any thoughts on what I should do or should expect from the mods I mentioned above. Thanks

Matt those are good numbers for what little mods you do have!

If you put in S3's you should see +15 WHP, so 165whp ish...

I have to run now but I'll be back to this thread later on ;)

Alright dang Matt, for that mileage those are some nice numbers.

If you won't want to spend much, add an Intake cam. S3's if you have the money.

As for ECU I would go for the Calum's Realtime ECU, it's cheaper and you can reprogram it, unlike JWT where you have to send it off and pay $100 for a reprogram.

I don't really know what is left for you to do to that car other than S3 cams. Maybe S4 cams, thermoblock spacers, advance timing? That is quite a list of mods you have. Great dyno numbers BTW.

I don't really know what is left for you to do to that car other than S3 cams. Maybe S4 cams, thermoblock spacers, advance timing? That is quite a list of mods you have. Great dyno numbers BTW.

True not too much left, maybe a port polish? S4 cams probably will be bad, since they have power mainly in the higher RPM's. Which is not good for Auto-X

Oh yeah that's true. I forgot this was for auto-x.

I like the feed back guys. Thanks. Yeah I think the plan is to go VE in the next few months. Now I am wondering how that will affect me autocross wise. I hear torque on a VE is less then a DE. I am curious about the S3s in my DE though.

You guys are right I am reaching the end of easy bolt on mods. It is almost like if I want to go furthur I am getting into the engine itself.

People keep saying turbo. But I would need to get another DE for that with less miles. Maybe high copression VE. :biggthump

Or VET like you mentioned in the past ;)

Why waste money on the s3 cams when you can have s4 instead?

Either way, you should go with at least a 2.5" exhaust.

Well I say S3s because S4s are designed for top end. S3s are for low and mid range power. I would go S4s if I was into street racing and wanted to catch my buddy at the end of a 1/4 mile but I am more into having power on tap after a 180 degree turn around.

I hear all this 2 1/2 exhaust talk and quite frankly I think that the ones saying it is better are the ones who have never even had 2 1/4.

It is a fact that you will have more back pressure from 2 1/4 then 2 1/2 but a little is good esspecially for what I am doing in autocross.

Like i said in the past on this forum. If I wanted max top end I would go with 2 1/2.

Also another thought. The idea behind 2 1/2 is more flow right because it is bigger? Well what about this for thought 2 1/4 is slightly tighter therefore more pressure and that increases exhaust velocity out.

Yes convert VET is neat and I have spoken on it before. I would love it but I think it would be more power then I would ever need for Autocross. Now I could do it and run very low boost but I know I will just be tempted to do more. Coarse I would be cool to have all that power on the road. It would certainly blow people away when a 99 four door sentra smokes some of the newer BMWs.

sorry, but 2.25" is just too small for a cammed sr20de. 2.5" is not even that big, this is coming from someone who has felt the difference in a car with s4 cams that went from 2.25" to 2.5".

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Yes convert VET is neat and I have spoken on it before. I would love it but I think it would be more power then I would ever need for Autocross. Now I could do it and run very low boost but I know I will just be tempted to do more. Coarse I would be cool to have all that power on the road. It would certainly blow people away when a 99 four door sentra smokes some of the newer BMWs.

I would then get an lower mileage DE and turbo it. It will be much cheaper and you will have enough power :biggthump

This makes me really want to get cams and see what happens on a dyno. How much more hp and torque do you really think a 2 1/2 in exhaust will get me compared to 2 1/4 exhaust if I ran cams on both set ups. If we are talking 6 more hp top end but 8 ft lbs less torque low end, no thanks. Curious what is your car set up for? Like do you drive on a track, autocross, street fun, drag, what sort of driving did you feel this big increase in power in?

Turboing a DE seems like a fun thing to do and if I did do this trust me good bye 2 1/4 exhaust. I am soon going to UTI in Orlando and after that into Nissan training. I spoke to someone the other day who did this and he said they go over the SR20 engine extensivly because of how well it has performed over the years. I hope with the knowledge I gain in there that I can make a good decission on what I want to do power wise in the future. ;)

turbo is a whole can of worms you really do not want to open in your daily driver

^Agreed.

I'll third that too, I thought your SE-L was only an auto-x monster, but since it's a DD then that is out of the question...

Maybe a new block and port polish it?

Yeah this is true the car is my DD but I plan to get another DD once I move and can afford it. Then I will have no limits when it comes to Moding her. I meet some guys who DD turboed SRs and have no serious problems, but I hear you, there is deffinately more to deal with if you use it as a DD. I really think VE is a great choice for a DD and a autocross monster. I think I would do some cool internal work to it before I droped it in my SE-L. My friend is having issues autocrossing his B16 swaped hatch civic. I think it is because he has issues being in the right part of the power band and in the right gear. I wonder if VVL will be harder to autocross? I know I like a challege eighther way.

Hard decissions ahead. One thought though if this was not my DD would be to get a Roller Rocker SR20 and turbo that.;)