Most % power increase with n/a bolts
 

What is the most % power increase people have made with NA bolt on mods?

From what i have seen on here, it seems like long tube headers, then probably a cat back exhaust. That should get you over 300 whp no problem.

NA with full bolt-ons seems to peak around 20% whp increase... there are lots of threads with dyno numbers for reference.

nothing you would ever notice except for the weight savings due to your wallet being lighter. but it will sound cooler and annoy the neighbors when you go to work in the morning

Again with the 'you can't feel it' blah blah blah. Clearly you are defining 'feel' by the bottom of your ***.

The hp gains are expensive per hp and some, like Steve over there, don't think they are worth it. If you don't push your car they probably are not by most standards. But if you spend time on closed roads on Sunday mornings or the track you'll appreciate the gains and weight loss.

If you want 'push you back in the seat' gains you need to go supercharger or twin turbo.

You wouldn't notice 30-50 whp? Will you share whatever you're smoking?

Plus the benefits of weight loss...

bolt ons for a NA engine will not give you that much increase, no matter how much ricer math is done or how sensitive your butt-dyno is.

Really? Stock Zs dyno at 270-280 whp. There's plenty of dyno sheets floating around here of 320+ whp Zs.

I can't wait for this thread to be closes...

We argue over the cost effectiveness of NA bolt ons every other day, and all that happens is we waste time by compare còck sizes while none of us use it because we are so busy arguing.



Guys, answer OP's question and let THEM make the decision. Not cost effective for the HP, why do you give a half a fùck? It's not your money, let them decide!

Ok, I'll re-do my post in percent to satisfy the OP's question. :p

Somewhere between a 10%-20% gain.

Lol!!!

I wasn't complaining to or about you!!!

exactly. my original comment was about my experiences and use of bolt ons in the past and was poking a bit of fun, OP hopefully can make up their own mind and do their own research on stuff rather than going the route of so many others that just go by manufacturer dynos and toss on a bunch of stuff, only to be disappointed they did nto get what they paid for. sure it is easy to tell someone to go spend money, it's is not your money. maybe i am just the person that don't like to see newcomers to cars like ours get screwed over by these parts manufacturers and their bloated HP gain numbers

I know. I'm just bored at work and hoping homie here comes up with some kind of explanation on how all of the dyno sheets we've seen here are wrong, and bolt ons don't make power.

Users here have posted their dyno sheets. Not manufacturers. I'm confused where the question is.

40-50WHP for a couple grand is A-OK by me, that's really not a bad return, yes you can go nitty gritty with the NA mods and that's where cost/HP goes down, but it's part of the fun too IMO

I agree with that.^^^^^^Add 4:08 gears & you can compete with/beat street Camaros & Mustangs. Also you'll be driving an all around great sports car.

OP, what are the thoughts behind your question? Are you debating the cost/benefit or thinking about skipping NA mods for FI?

:iagree:

If you have no plans to go beyond N/A mods, a car with 4.08 gears and intake/HFCs/catback and tune would be a hell of a lot of fun.

Direct Port Nitrous FTW LOL

Here's my two cents worth. May not be worth that much but that's what I'm charging. ;)

1) Nissan is already getting just about as much out of the engine as can be done (without damaging itself). The days of major power gains with simple bolt-ons is over. If you want substantially more power, you need a turbo or supercharger.

2) Almost all after-market parts for the Z are expensive. Small market, lots of engineering required to improve on what the factory has done, &c.

3) Mods are not necessarily additive and can, in some cases, actually work against each other. Eg, if mod1 alone gives a 5 HP boost and mod2 gives 10, the two together probably won't give a 15 HP boost. You need to do a lot of research to make sure your mods play well with each other. You can't just throw the "best" components together and expect everything to work right.

That said, it's your car and money. If you like mods, go for it! Just don't be expecting much in the way of power gains without spending a lot of money.

Best hp per dollar...the the370z.com decal! I haven't dyno'd it yet but I am pretty sure that's what I feel in my *** now. That or it's gas.

http://www.the370z.com/members/arrva...promote-yo.jpg

Don't forget the performance increase from decreasing rotational mass. The biggest performance gain my car has gotten was dropping 8lbs off each corner with lighter wheels and tires. If I can find some weight listings on aftermarket rotors I think even bigger gains could be had here.

I noticed that much more than the intake/exhaust or sway bar/endlink/springs combos - although I will say replacing the broken end links with SPL ones allowed me to tighten the swaybar (actually re-attach it) and that made a BIG difference in cornering speeds vs running with broken stock ones (and one not attached). Not necessarily a power increase but definitely allowed me to keep the car in the power band through corners much easier.

:iagree: but I believe in this case the right tune makes the difference, of course if you are willing to take your risks with a car still under warranty.
The right tune coupled with CAI, LTH/TP/HFC, catback will give you good fun (and sound). No miracles unless TT or SC tho.

With full bolt-ons and a tune, most people seem to hit the 300-330 range. I've seen one member hit 340 but I think he's the only one up there.
And as most have said, parts for these cars can get pretty pricey fairly quickly.
Anywhoo, Enjoy car :tiphat:

Used parts will bring the cost down a whole lot. I'll bet you can get intake, cats, exhaust and an uprev license for less than $2k fairly easily. Add another couple hundred for tuning and you're good to go.

Excellent point. :tiphat: A good tune is a must-do to get the most out of any mods.

If I had a tuner anywhere nearby (difficult enough to find a good service department around here - forget anything "exotic" like tuning), I'd get my DD tuned just for the potential efficiency bump. Still considering a remote tune, but not high on my priority list at the moment.

Z1 has 349WHP on E85

:iagree: there's also that route, if you stock the forum long enough you can get some pretty good deals :)

I asked the question just to get other people's results. I am located in Australia and the dyno's that we use are different from your dyno's so wanted to get the % gains as a good comparison to where I'm at. Also I am a tuner with a dyno and can test things out. My car is a 7at which made 183kw at the wheels standard, I'm currently up to 221kw with my current bolt on parts and custom tuning. I will post up dyno graphs for each mod on Monday when I'm back at work. For all those that also think NA is a waste I have two turbos ready to go on in the near future but wanted to see what the gains were NA as starting point. Cheers dave

You're pretty spot on with that estimate:
$800 ark grip
$300 FI HFC
$300 Takeda CAI
$500 ECUTek w/ lifetime tune
$1900 total - everything brand used except the ECUTek

WHAT!? :p