ok i have a 04 5at coupe i already have a injen cai and 5/16 spacer what other bolt ons can i do with out touching the exhaust???

 

There is not a whole lot to do after those 2 that you have already. You might want to look into a set of grounding wires and a valve body upgrade as well for the transmission to get faster shifts. The valve body wouldnt be a bolt on though.

Also, there are Unorthodox racing pulleys, they are light weight versions of our pulleys. They are also underdrive pulleys so they will underdrive your ac and i believe power stearing a little bit, but nothing to worry about unless you use your A/C more than 80% of the time. They are said to add around 1-2 hp for every pound off the crank, but its a big debate over if they really do or not. Some say they feel it while others say its a waste.

There are oil pan spacers as well, you will be able to add 1 more quart of oil. So i guess it will help in the long run and help your engine live a little bit longer.

One more thing is the brakes. If you get a set of aftermarket rotors from stoptech or rotora you might be able to save a few pounds of unsprung weight which will help some. Its less weight the car has to turn over, doubt it will be any faster, but who knows. If you get the rotors and nice brake pads you might have a little bit more stopping power as well.

 

Mrev2, Headers, Grounding Gear, Test Pipes, Nitrous, Spark Plugs,......sway Bars Would Be Nice As Well

 

He already has the spacer...i dont think he needs the mrev 2 with a stock exhaust it would be a waste i think...also, he said without touching the exhaust so headers and test pipes are out. Nitrous isnt really a "bolt on" either...Spark plugs i guess would be a good idea, but it isnt going to help power wise.

 

the mrev2 would make a hella difference with or without the spacer! ...with or without an aftermarket exhaust! and he didnt say exhaust system also after installig my spark plugs and my grounding kit i noticed a difference worth paying for as well.....and a nitrous system is bolted on last time i checked?

 

He did say with out touching the exhaust. So im guessing that means headers, cats/ pipes anything that has to do with the exhaust. Nitrous is a bolt on your right, but its not a basic easy bolt on...he could blow his motor possibly if it isnt done right and tuned or whatnot...nitrous is a pain in the *** with our sh*t internals. Spark plugs and grounding wires are all going to be in your head. You piad for something that is "supposed to be better" so your going to think it and believe your car is faster. We put grounding wires on and tested it at the track and it made no difference. Spark plugs will make a difference once your stock ones are shot, but if the stock ones are fine i would say leave them alone its not going to make a HP difference.

The grounding wires were hand made BTW so that could be why, but im almost 100% sure they are not going to make a difference except at idle.

 

-1 well i dont think headers is part of the exhaust but maybe the exhaust system and it components as well as test pipes....lets not get into whats part of a exhaust system now however u may feel is obviously different to how i KNOW how my g felt...and did i say it was faster?? i would say ur almost 100% is worthless to me

 

all the gains that are advertised from the mrev2 are for the rev up

The Motordyne MREV2 lower collector! A universal stealth mod for use on any 350Z, G35, M35 and FX 35. When used with or without a spacer or aftermarket plenum, this modified lower collector will make substantial power gains.
Multiple independent test show when used with a 5/16" spacer on the REVUP engine, the combination will add a "minimum" of 15+ HP and 18+ TQ in the upper midrange. Many independent MREV REVUP tests have dynod in excess of 20HP and 30 TQ in the upper midrange and with high RPM peak power increased by 3-5 HP.

-MD

notice how it never mentions the gains on the non rev ups?

eh, jmo. i wouldnt get the mrev2 without a tuning

 

wasnt there an mrev+ made for the non revups

 

Yes, i believe there was one for the non-rev up motor, but basicly its taking the place of the 5/16th spacer. So since he already has the spacer there would be no point for it since it does the same thing. So its one or the other either the mrev or the spacer shich ever one you want.

 

When we went to the track and tested the grounding wires there were no difference. I woulkd like to see a dyno sheet with the gains. I know they did provide a smoother idle, but idk we didnt see anything when we tested them besides the idle.

 

so in other words there is nothing else that i can do??

 

Not really.
Welcome to the crew

 

MREV2 does work for the non-revup engine and has been confirmed to produce slightly better gains than the 5/16" spacer. You can use them together and there will be additional gains, but with the non-revup engine running lean will become a concern.

Here's info from the advertisement on everything35's site:
http://www.infinitipa.zoovy.com/product/MREV2

And here's confirmation from the man himself, plus his comments on whether running both upgrades on the non-revup engine is a good idea:
https://g35driver.com/forums/showthr...=101679&page=2

 

I feel yeah man. My warranty runs out in December so I've been doing a lot of research on this site planning future upgrades (I know most mods wouldn't void the warranty, but I didn't want to worry about it). But the conclusion I've come to is pretty much the same as the other guys here: there's just not much you can do to improve on the original engine design, short of going FI. There are definitely some worthwhile minor league engine mods, but you've probably chosen 2 of the 3 already.

My plan is to do some of those basic engine mods (MREV2/spacer, intake, etc.) and then focus on appearance and creature comfort mods after that. I just can't see the point of spending the enormous amount of $$$ required to make any substantial gains on this car. Enjoy it for what it is, or just upgrade to something faster. My $.02