SE-R spec-v vs. SE-R

[CentralFLSentraSE-R]

What are the differences. I have an 05 SE-R and my dad has an 02 SE-R spec-v. He got 10 hp on me. What makes the difference. And is the suspension the same for both?

[batmank0s]

as f

What are the differences. I have an 05 SE-R and my dad has an 02 SE-R spec-v. He got 10 hp on me. What makes the difference. And is the suspension the same for both?

as far as i know the spec has more hp and is a standard transmission with the SE-R has an auto

[nissanpartsnow]

What are the differences. I have an 05 SE-R and my dad has an 02 SE-R spec-v. He got 10 hp on me. What makes the difference. And is the suspension the same for both?

Mechanically they are the same. The HP difference is due to the two cars having different ECUs...the electronics in the auto trans model are slightly detuned.

[nametakennow]

Nissan claims that the Spec has a different exhaust, but this has been proven wrong. They also claim that the ECU tuning is different, but dyno #s have proven that wrong too. The SE-R and the Spec dyno the same.

The SE-R has a speed limiter around 128mph (some SE-R owners claim they've hit 130-135) because of the lower speed rating of the tires.

The Spec has stiffer springs in addition to the larger wheels. There's also the Brembo option for the Spec, which I don't think was available for the base SE-R.

Of course the Spec also has the Helical limited slip on the 6spd trans, while the SE-R had a 5spd non-LSD manual and the optional 5spd auto.

[D3stro]

Brembo on SpecV were only available on 2004-06 models. The 17'' SpecV wheels of the 2002-03 don't clear the Brembo fyi.

The intake manifold ain't the same too iirc.

The 2002-03 SpecV were running way too lean at low rpm and too rich at high rpm. The problem was corrected for the 2004-06. That is why getting a SAFC2 for a 2002-03 you'll see more hp gain than for a 2004-06 because the A/F ratio is nearly perfect.

Automatic gear box only on all SER from 2004 to 2006. While 2002-03 SER had automatic 5 speed or manual 5 speed available.Automatic gear box is heavier than a manual gear box.

Automatic car is boring to drive too.

[D.Berry]

Brembo on SpecV were only available on 2004-06 models. The 17'' SpecV wheels of the 2002-03 don't clear the Brembo fyi.

The intake manifold ain't the same too iirc.

The 2002-03 SpecV were running way too lean at low rpm and too rich at high rpm. The problem was corrected for the 2004-06. That is why getting a SAFC2 for a 2002-03 you'll see more hp gain than for a 2004-06 because the A/F ratio is nearly perfect.

Automatic gear box only on all SER from 2004 to 2006. While 2002-03 SER had automatic 5 speed or manual 5 speed available.Automatic gear box is heavier than a manual gear box.

Automatic car is boring to drive too.

WHO MAKES A NICE SAFC2 AT A DECENT PRICE? ...OR WHERE CAN YOU GET ONE 4 A DECENT PRICE?

[nametakennow]

Again with the caps lock...

The SAFCII is a product/patent of Apex-i. They are the only ones that make it.

I've seen them for around $250 new at best. Used you can find them for $150-200 depending on condition.

[D.Berry]

O...IGHT...HOW MUCH OV A DIFFERENCE DOES IT MAKE ON UR CAR?...SUMTHIN WORTH GETTIN?

[nametakennow]

Unless you've got serious mods, don't bother.

By that, I mean cams, internal work, or boost.

[D.Berry]

NA...ALL STOCK EXCEPT THA RIMS

[D3stro]

NA...ALL STOCK EXCEPT THA RIMS

Forget it then. A SAFC should be nearly the last mod you should get. So the basic bolt-on like intake, header, exhaust. Then maybe cams, intake spacer etc... because all of theses mods will play on the A/F ratio. So, for an exemple, you get the I/H/E combo, then you get an SAFC and get some tuning for it because you got to do it if you want to get some result. Let say after that, you got some money for Nismo or JWT cams, well, you'll have to go back to the dyno for tuning again because cams will affect the A/F ratio.

[D.Berry]

O IGHT...I AINT GONNA WORRY BOUT DAT TILL LATER DEN

[nametakennow]

I/H/E doesn't really mess with your A/F ratio, the ECU can compensate for the mild alterations those mods can create. When more significant mods (like cams) come into play, the stock ECU has more trouble adjusting because internal functions are different. In the case of cams, valve duration is changed, and the ECU isn't set up to do much adjustment with that (though the QR has a simplistic electronically-controlled cam, not near the extent of NEO-VVL or VTEC), so more power can be unlocked with a piggyback to do some fine tuning on top of what the ECU does.

[D.Berry]

THANKS FO THA INFO...WHUT OTHA SIMPLE MODS BESIDES INTAKE HEADERS N EXHAUST COULD U DO 2 GET SUM MORE POWER

[240_SeX]

WHO MAKES A NICE SAFC2 AT A DECENT PRICE? ...OR WHERE CAN YOU GET ONE 4 A DECENT PRICE?

I would stay away from the safc on this car if you do any drastic changes such as a turbo. Reason being that the safc cannot alter timing, it only alters things like maf reading to the ECU. When you add a turbo you have to alter the maf signal so much the ecu starts doing odd things. a buddy of mine turboed his 03 spec v and they screwed him on his uni-chip and he couldent afford anything but an safc. We tuned it to have a rich afr but the timing was all screwed up he had -3* at WOT It blew up. Just something to think about

[D.Berry]

IGHT...I PLAN ON PUTTIN A TURBO IN IT NEXT YEAR SUM TYME...SPEAKIN OF TURBOS...WHERE CAN YOU GET A GOOD TURBO...WHEN I WAS THINKIN BOUT GETTIN A CIVIC N PUTTIN A TURBO IN IT...PPL WAS SAYIN THA ONES ON EBAY THAT CLAIM TO B THA FULL KIT...ISNT AND YOU HAV TO BUY MORE **** 4 IT...IZ IT THA SAME WIT SENTRA KITS...LYKE DIS 1 http://cgi.ebay.com/ebaymotors...58028

[240_SeX]

I would not buy the kits off ebay. They are not complete for they do not come with anything to tune with also the intercooler piping is just some universal bent pipes so you have to make your own i/c piping. this is the kit my buddy got, it is very complete and high quailty it also comes with the uni-chip which is pnp. This kit is bolt on and only took up about 4 hours to install and have the car running http://www.treadstoneperforman...o+kit
Modified by 240_SeX at 11:38 AM 3/14/2008

[D.Berry]

DATS WHUTS UP...U ALL INSTALLED UR SELF?

[240_SeX]

yep its rather strait forward

[nametakennow]

As for the turbo, please search. We've discussed this at length in this forum. DO NOT go the Ebay route. Turbos aren't something to fool around about.

The SAFCII is entirely capable of handling a turbo on a QR25 unless you were running a ton of boost or at least too much for the fuel system. It sounds like your buddy got screwed over.

[240_SeX]

we only ran 8psi maybe there was another problem...ran perfect before turbo tho

[D.Berry]

HOW MUCH BOOST SHOULD U RUN WITTA SAFCII...OR HOW MUCH CAN YOU?

[nametakennow]

The SAFCII adjusts the MAF signal (up to +/- 50%) that tells the ECU how much fuel to inject. So, theoretically, as much boost as you can provide fuel for.

However, if the MAF is maxed out already, it can't be adjusted for more.

Off the top of my head I don't know what the Spec's MAF is capable of, but I do know that the limit will be above that of the internals of the engine.

I've seen as much as 10psi or so on stock internals work just fine. I've heard of more, but 6-10 seems to be the norm.

It's really a matter of how much money you're willing to spend as to how much boost/power you'll get.

[D.Berry]

WHUT OTHA INTERNALS CAN U UPGRADE BESIDES CAMS?

[nametakennow]

Pistons, rods, cylinder boring/sleeving, there's probably even some crank work you could do. The only limit is your bank account.

[D.Berry]

WHUT WOULD B BETTAR TO START MODDIN WHEN IT CUMS TO A STOCK ENGINE?

[nametakennow]

Intake, header, exhaust are the basic/introductory standard.

You ought to get a header regardless because of the precat breakup issue on 02-06 SE-Rs.

[D.Berry]

YEA DATS WHUT I WAS THINKIN... WHUT ABOUT THA PRECAT BACK UP?...I NOTICE THERE WAS 2 DIFF TYPES OV HEADERS FOR THA 02 SENTRAS...ONE WITTA CAT AND ONE WIT OUT...WHUTS THA DIFF BESIDES HORSEPOWER
Modified by D.Berry at 9:45 AM 3/16/2008

[SupraFast]

Get it without the precat. The precat's tend to break up and get sucked back into the motor. I wish you would turn your caps off and type somewhat normal heh...kind of frustrating to read.

[nametakennow]

The only header with a precat option is the NISMO one. Regardless, it's kinda pointless.

Get one without.