4G15 tuning and related info

stock933 · Posted: Thu May 03, 2007 3:15 pm Post subject:

Here's a question to all the 4g15 tuners out there . Common problem is that the fuel pressure regulator goes bad on the GDI DOHC(part#md362933) , has anyone ever used an after market regulator with any success on the 4g15 engine ? I know MISHI was checking this out but anyone else has ever tried this ?

Rudman · Posted: Thu May 03, 2007 3:44 pm Post subject:

^^I think Blazing has an Aeromotive FPR on his, but his engine is not GDI.......PM him for more info.

There is a 4G15 GDI DOHC?

stock933 · Posted: Thu May 03, 2007 3:56 pm Post subject:

Yeah most of the lancer cedia's esp 2001 model come with that engine

http://media.mitsubishi-mot.../corporate/detail421.html

BulletProof · Posted: Thu May 03, 2007 5:01 pm Post subject:

Nice engine bay, venum.. love the intake..

venum · Posted: Fri May 04, 2007 12:58 pm Post subject:

Rudman, teh 4G15 GDI is a DOHC

most new gen 4G15's are DOHC even the MIVEC and MIVEC Turbo variants

MISHI · Posted: Fri May 04, 2007 9:06 pm Post subject:

yeah was told it can run an aftermarket FPR.... not sure exactly which brand though

peung · Posted: Sat May 12, 2007 8:05 pm Post subject:

Hey.. in context of the bolt on air filter - as shown in the pics- How does using a K&N high performance air filter that fits the OEM setup, compare with the bolt on cone as shown?

I ask cause i am thinking that with the cone in that 4G15 wouldnt u be pulling hot air from inside the engine instead of cooler air....(that is is if the 4G15 is bone stock and the air filter is first upgrade bein performed).

srnoth · Posted: Sun May 13, 2007 10:33 pm Post subject:

Wow, quite a thread here. Nice info, I'm assuming most of it is useful for the 4g13 as well, since it's identical to the 4g15 SOHC, just less displacement.

So after all this talk of installing a small turbo, what happened?

Also, are there any piggyback ECUs that can boost the performance of these engines simply by being installed? If so how much do they cost?

Stephen.

srnoth · Posted: Sun May 13, 2007 10:43 pm Post subject:

blazing · Posted: Mon May 14, 2007 1:37 am Post subject:

looks good, just dont drive through no flood ..... and give yuh engine a lil clean nah.

srnoth · Posted: Mon May 14, 2007 1:50 am Post subject:

peung · Posted: Mon May 14, 2007 10:59 pm Post subject:

srnoth · Posted: Tue May 15, 2007 1:31 am Post subject:

peung, thas no scene. I'm doing some work on my intake this week actually. Should have a full Free Flow Cold Air Intake using a K&N dropin filter and the original filter box. I'll put some pics up tomorrow.

rych_bess2k6 · Posted: Tue May 15, 2007 12:22 pm Post subject:

i want a cai... Sad

srnoth · Posted: Tue May 15, 2007 3:55 pm Post subject:

^^

rych_bess2k6 · Posted: Tue May 15, 2007 7:43 pm Post subject:

exactly what do i need to do this one.... length of pipe etc... i mean everythin down to hose clips...

Click for full-size.

srnoth · Posted: Tue May 15, 2007 8:27 pm Post subject:

Well I just got:

1 Arospeed 3" 45 degree bend.
1 Arospeed 3" 90 degree bend.

Each had about 12" of pipe on either side of the bend, so that was all the pipe I needed. And they came with the 2 blue rubber connectors & the clamps.

Basically the total list of stuff is:
Filter.
Clamp for filter.
45 degree bend to come up from the fender into the engine bay.
Rubber connector & 2 clamps.
45 degree bend to reach the throttle body.
Rubber connector & 2 clamps to connect to throttle body.

This should work well with the 4g15 you have. The main problem I had with the CAI was that it started to make the 'vaaarp' intake noise as soon as you mashed the X passed 1/2 way. And well as you know with the 4g13 you're mashing the X passed half way most of the time Very Happy

. But with the larger engine it shouldn't be too loud when you're cruising - just when you're driving hard.

venum · Posted: Tue May 15, 2007 10:52 pm Post subject:

srnoth, did you have to fabricate any supports for the piping?

I have a short ram with 2 90 degree bends

the person I bought it from had fabricated a support that boled onto the tranny

this allowed the intake to flex when the engine moved (and the 4G15 DOHC) moves a lot, especially when in 2nd and 1st gear)

i am considering changing this design to another short ram, this time with 2 45 degree bends, stopping just behind teh battery, but need to support the new setup

so I am contemplating how I am going to do this, obviously by a custom fabricated method, somehow

the intake must cater for flex, though

srnoth · Posted: Wed May 16, 2007 12:49 am Post subject:

Well to be honest the only mounting I used was Zip-ties Mr. Green

. But the way I ran mine, it didn't really need support - and the engine was able to vibrate & move freely without causing any problems. It rested on the body of the car where it went through to the fender, so I used a zip tie there to hold it steady. However, if you're only doing a short ram, you would need to fabricate some sort of support. What you could do it use some 2" wide flat aluminium strips, which are reasonably easily bent, to support the intake, and bolt them on where the stock filter box was.

venum · Posted: Wed May 16, 2007 11:34 pm Post subject:

i will indeed have to fabricate some mounts

the loaction where the stock airbox was is a candidate

i need to do it in such a manner that allows flex when the engine moves