Can I make the 4.0 fast enough?

[huskyfan23]

I don't think a second gen MAF would work for a first gen, it would have a different flow so it probably wouldn't read correctly.

 

[Alec]

Never use a MAS without properly calibrated electronics.

 

[Josh]

If you had a 95+ MAS for a 4.0 OHV would'nt it be calibrated pretty close since the motors are similar? I know the motors have some differences, but, whats the worst that could happen besides crappy MPG and a rough running motor? I like to experiment which is not always a good thing.

 

[Alec]

If you want to try it, it would have to be from a 95: OBDI vs OBDII.

 

[Pheonixx77]

i posted somethng similar in another thread....i tried something similar with a 93 ranger 2.3L using a 2.3L svo mustang MAF . ...the flow was all wrong i used my sensor with the mustang housing, the truck ran rough detonated (spark knock, pre ignition etc...)and stalled about every 5seconds...not to mention when i test drove it to see why the acceleration was way off, kinda like it did not want to decelerate. bad idea, use you MAF or get one from granetelli motorsports or somewhere...

 

[hydroxy]

what is the stock rwhp for the 4.0 ohv?

 

[JOHN V.]

The stock flywheel horsepower for the V6 OHV is a about 160. If you use the 80% formula that puts the RWHP at about 128. I know that does does not sound to impressive, but there is a lot of potential there. All the the mods you are talking about will help for the common goal of net gain horsepower and improved throttle response. These are all considered to be stage 2 upgrades. You would not want these unless you have already done the intake & exhaust (stage 1 upgrades)You will realize more benifits from an upgraded mass air sensor if you do the throttle body and the headers too. You can tie the whole thing together with a custom Apten chip. You expect a good improvement across the entire rpm range, yet it will idle smooth and start right up in the am. I have all these mods on my 94 XLT and it works well.

A mass air sensor from another year will no work. The calibration is different and they also changed to a 6-pin connector in 96.

We have the Pro-M 70mm custom calibrated mass air sensor for $239.95.

 

[SteveVB]

between 115 and 120 rwhp

 

[hydroxy]

I think it would be really interesting to see how EXACTLY much hp gain there is when you install a KNN filter and remove the air filter housing. And then how much w/ an exhaust (test each seperately and then together). I know the companies make claims, but I'd like to see actual numbers =)

and find the individual results for plugs,wires,MAF,chip, etc etc - all the small/cheap/bolt on mods.

Find out the differences w/ just that item added to the stock ex.

(I know that there have been before/after w/ chip - but I think he had exhaust/intake on too at the time)

I know w/ intake and exhaust I noticed a huge improvement (atleast it felt a lot better), but I would love to know exactly what numbers it translates into. Sorry, I like to see exact numbers, and tons of them.

I post this w/out searching the threads to see if this has been done... so dont yell if I'm the 1000th person to say this =P

-Patrick

 

[Alec]

Each small mod like that is probably 2-3 peak rwhp. However, they all flatten the power curves and you may get as much as 10 or so rwhp at other points on the curve. And remember, they're all additive so they help each other.

And besides hp and tq there's also the throttle response improvement, which makes a huge difference in daily driving.

 

[Josh]

OK I forgot about the OBD1 vs OBDll part. Also when I disconnect my MAF while the motor is running, should there be a difference in the idle? Would it run rough or something? There is no change when mine is disconnected.

 

[hydroxy]

yes, I realize there would like 2-3hp per mod, it would just be really interesting in my opinion to see what exactly each part does.


I was going to suggest getting all the different possible combinations of mods together (just wires... just plugs and MAF, just MAF, wires, plugs) etc etc but that would be a TON of work =P

 

[Alec]

....and money for dyno runs.

 

[hydroxy]

would cost you more then the mods =P

 

[Pheonixx77]

heres a bit of realism...K&N says 10-15 hp gain, true but not rwhp t's engine hp, exaust 20 or so?? again engne hp not rwhp. basicly if someone claims a bolt on gives say 25hp...it will end up as maybe 5 or 10 at thr rear wheels. again all this depends on how well your transmission transfers the power, slippage etc...all factors in here.

 

[Pheonixx77]

Most likely OBDII is compensating for it, most engine control systems are designed to compensate for a "sensor going bad" thats what your engine thinks when you unplug it. just my 2c guess.
sorry for the double post i saw this one a bt late...

Originally posted by Josh
OK I forgot about the OBD1 vs OBDll part. Also when I disconnect my MAF while the motor is running, should there be a difference in the idle? Would it run rough or something? There is no change when mine is disconnected.

 

[expo5.0]

their claims aren't even true for hp at the flywheel, take the claim divide it by 2.5 for the flywheel hp, then multiply the result by 75% to go to rwhp or awhp and that will give you what it actually does...

 

[hydroxy]

I have a ricer friend and I was talking to him about this today. I asked him how much hp his civic had... he went on to list the base (forget the #), and then went - 15hp from intake, 25hp from exhaust, 10hp from cam, 5-10 from plugs/wires... Apparently those marketing gimmicks work =P

 

[LukeDog3D]

Yeah, that's classic. I have a friend with a 2000 Civic SI, with an intake. He has a buddy with a '99 si with the works (intake, exhaust, etc etc etc), plus a few other things, like a lightweight flywheel, super clamping power clutch (for all of that torque), blah, blah, blah...anyway, he had that theory of adding the manufacturer's claims on top of one another. Then both guys raced, and the stock SI whipped the other one's ass by about a bumper length. It was great.

 

[Pheonixx77]

lol they could have dropped two bags of "uncle bens" off a roof for that effect!! LOLOLOLOLOLOLOLOLOLOLOLOLOLOLOLOL