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I'm not sure if the truck motor has oil squirters or not, but it appears that they don't.

They're significantly different. Here is what I have been able to find by comparing part numbers and specs on Alldata for a '98 240SX vs a '98 Frontier. Frontiers had 9.2:1 compression, 240SXs had 9.5:1. The pistons are different part numbers, so it's likely the truck piston has a deeper dish on it....

Well, you need a fuel pressure regulator, but the real question is whether the one you have in there is working or not. I'd start by throwing a fuel pressure gauge on there and seeing if the pressure at idle is within specs. If it is, and if EFI Specialists tuned that ECU for 550 cc injectors at sto...

Also, not all GM MAF sensors give a straight voltage output signal. Some of them are frequency based instead, like the ones on LSx motors.

The device from Jeg's definitely looks like an industrial compressed air filter to me, although they may have tried to fancy it up with a billet base. If you go to mcmaster.com and search for "air filter," you will find the same thing for around $30.

A lot of universal engine management systems can handle eight injectors and run on a MAP sensor (it's actually less common to see one that will run a MAF sensor). The Megasquirt can handle eight injectors pretty easily and gives you a choice between having them kick in abruptly and setting things up...

I was looking into the aem pnp unit for odb2 so I would like to know what these guys can do and if they can make power. A standalone EMS is only as good as the tune that's on it. It's very rare to see two standalone systems with the same feature set make different power if they are tuned equally we...

The eManage is at least as capable as the SAFC, and as others have noted, it can add timing adjustment (which can often mean more for power than fuel adjustment, as long as the fuel is in a range that it won't blow your motor). Megasquirt can be a bit complicated, but if you are looking into it and ...

At the GRM $2008 Challenge, somebody showed up with a 240SX with a Skyline front end on it - and a Chevy V8 under the hood. If you like the Silvia front clip but need a KA for other reasons, the only reason you need to build a car is that it makes sense to you.

a question, im gonna be doing my installs soon (engine, turbo, megasquirt, IC, VLSD) and i have found out that i will have no tach because i effing forgot to get that installedon the ms-II when i ordered it, what are some reasonable alternatives to get around/through this dilema, will i need to ope...

I've seen one that was highly effective on a 350Z with a monsterous turbo setup, and those are usually a lot tougher to put a standalone on than a 240SX. The biggest potential hang-up is that HKS only allows a few shops to tune it. Not bad if there's someplace like Forged Performance in your area, a...

The only real measure if your AFR is wrong or right at idle is if you can get a smooth idle and that in theory the best AFR will pull the most vacuum. If it is idling happily at that AFR, not shaking or stuttering, I would see no reason to change it.

It's not much different, other than that it can be a bit tricky to wire up the stock ignitor and most users have been running an external coil. The only real difference as far as Megasquirt is concerned is the wiring pinout.

It sounds like you've got a misfire at idle - most sequential fire setups will idle at 14.7:1, and batch fire systems often are a little richer. The rule of thumb we usually go by is "just rich enough to make it run smoothly." A misfire will create a false lean reading, and I suspect that'...

Yes, the Blaster coil does have to be mounted vertically, like most can coils. There is an epoxy filled version that can sit upside down, but the normal one can leak if mounted sideways. The Blaster may not be that much of an upgrade if you haven't paired it with an MSD 6 box. On its own it may not ...

DIYAutotune is in Suwanee. We're at a fair number of local autocrosses and sometimes at Atlanta Dragway.

(Admittedly, we don't have a KA-T hanging around the shop at the moment.)

Sorry to hear that. Some things can't wait - food first, but bills and things like that. If you're out of a job and got things that you need money for, you've got to do what you've got to do. I've got a hard time telling from your post if this is just a short cash flow crunch, something a couple wee...

In theory the lower compression will let you run more timing advance without pinging for a given level of boost. Whether this is going to be an issue - or even will be desirable - is another story, as sometimes the timing can be too advanced without pinging. I don't expect the tune to be very far of...

from what i have seen the ka crank is strong enough, but i would definatly have it knife-edge and balanced ^ based purely on the fact i assume the fwd and rwd cranks are identical, lol A part number search confirms that this the case - Altima and 240SX cranks are the same part number. However, not ...

The mod I'm describing is a bit complicated. Here's what it entails: 1. Disassemble a 1G DSM CAS and pull the shutter wheel out of it. 2. Put the shutter wheel into the KA's distributor. 3. Use MS2/Extra code and the input mods for a DSM combined with a single coil driver output. This gives a somewh...

with the msd btm ive been told that i would also need to get the msd 6al or something similar to go along with the btm cause the btm will not work with out it is this true There are three different versions of the MSD BTM. (I once used one on a carbed turbo buildup, where these are still a useful t...

Depending on the engine, you may sometimes get peak power before you hit knock, especially on race gas. There's a difference between a spark tune that won't blow your engine and a tune that's optimized for peak power. Although with a SAFC you usually have to settle for one that won't blow your engin...

seanc wrote:12-13 while crusing is pretty bad. i shoot for 15-15.5:1.

Agreed. The best way would be to fix the tune, but you might be able to remedy this by decreasing your fuel pressure as you're running rich across the board.

The injectors on this car draw power straight from the ECCS relay. If they aren't getting 12 volt power with the key on but the ECU is functional, I would check the wiring to the injectors as there's not much that can produce this symptom besides damage to the wiring.

What's your AFR look like at WOT, and does it look OK at other times or is it rich across the board?

So, exactly how is this motor different, and more importantly, how's its wiring harness differ? If the engine uses the same sensors and wiring, or their functional equivalents, you can usually get a plug and play EMS working on it except for the base maps will need to be changed. This could even wor...

A properly designed engine/cooling system should not require separate tunes for each using the same boost pressure/fuel. Quoted for emphasis. The only time you'd want multiple maps would be if you've got a pump gas and a race gas map or run different parts on the street and at the dragstrip. Two se...

I've seen several 240SX installations that used the stock CAS, both with MS1 and MS2. While there is room for improvement when it comes to accuracy, the CAS is still works reasonably well. A crank trigger is going to be more accurate than a cam driven sensor just because it is a more direct drive, a...

the ones that dont have the MAFS most likely are running a Standalone and have a MAP sensor or are running blowthrough setup Yep, most of your standalone systems will let you remove the MAF in favor of a MAP sensor. In fact, most of the standalones out there ignore the MAF even if it's still in pla...

Nissan's official service literature says to read the voltage instead of the ohms, although they also have the ohms listed for an off car check. Voltage check: Back probe it at the ECU with the ignition on and the engine stopped, with pin 23 connected to the meter's positive terminal and pin 43 nega...