I'm not trying to start a Honda vs. Dodge vs. Mistubishi (a little OT but oh well) war, but I just cant understand why some factory motors (srt-4 and EVO ) have to boost like 16-18 psi to make good numbers....if even a D series motor was boosted at 16 psi then 240 hp would make everyone wonder what was wrong with it. Just a little insight.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Ricey McRicerton &raquo;</TD></TR><TR><TD CLASS="quote">I'm not trying to start a Honda vs. Dodge vs. Mistubishi (a little OT but oh well) war, but I just cant understand why some factory motors (srt-4 and EVO ) have to boost like 16-18 psi to make good numbers....if even a D series motor was boosted at 16 psi then 240 hp would make everyone wonder what was wrong with it. Just a little insight. </TD></TR></TABLE>

Real simple:

small turbos need to boost high to gain high numbers

big turbos will boost lower to produce same numbers as the smaller turbos at higher psi.

 

What turbo is on the srt4 and what turbo is on the EVO??? Even on a Tdo4h-15g kit (which I have) 240 fwhp would not be that impressive to me. Agian..not trying to start a flame war...just trying to learn!! I have not driven the new SRT-4 to know if there is lag or anything, so just trying to learn something about them (they don't have any at the dealership down here!!)

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Ricey McRicerton &raquo;</TD></TR><TR><TD CLASS="quote">What turbo is on the srt4 and what turbo is on the EVO??? Even on a Tdo4h-15g kit (which I have) 240 fwhp would not be that impressive to me. Agian..not trying to start a flame war...just trying to learn!! I have not driven the new SRT-4 to know if there is lag or anything, so just trying to learn something about them (they don't have any at the dealership down here!!)</TD></TR></TABLE>

Mitsubishi TD04-L-16GK

Lag? What's lag?

Boost is pretty much instantaneous.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ion_four &raquo;</TD></TR><TR><TD CLASS="quote">Don't those injectors seem freakin huge for the power output? I'm not raggin, but a buddy of mine had a OMNI GLHS (I think?) and ran 22psi and while it was damned fast, it seemed rather weak for that size engine and that boost...after looking at a torn-down head, it seems they have tiny ports, explaining their high-boost/low-hp/high-torque characteristics...I think they have some beefy-as-****! blocks, but really need to slap a better head on there </TD></TR></TABLE>

i think the injectors seem huge because the static fuel pressure is higher than most cars.

as for the GLHS on 22psi, i think i can answer your question (see: username)

yeah, it's all in the head. they have crappy heads stock. sohc 8-valve heads, with both the intake and exhaust manifold on the same side of head. correct me if i'm wrong, but i hear that's no good for flow. that's why you gotta run really high boost to go really fast. 16-valve swap is the way to go!

the blocks are beefy though some of the engines came with forged cranks and rods, and a few even came with forged pistons, too.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by eTec &raquo;</TD></TR><TR><TD CLASS="quote">

Mitsubishi TD04-L-16GK

Lag? What's lag?

Boost is pretty much instantaneous.</TD></TR></TABLE>

So how much boost are these good for?? (like where do they actually stop making good power psi wise??)

 

i think 18psi. not sure.

 

Okay thanks!! Learned a lot in here guys!!

 

No, its higher than that. The pcm limits boost past 18-19psi. Some guys have been clamping the map sensor to fool the pcm so fuel and boost can be raised.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by eTec &raquo;</TD></TR><TR><TD CLASS="quote">No, its higher than that. The pcm limits boost past 18-19psi. Some guys have been clamping the map sensor to fool the pcm so fuel and boost can be raised.</TD></TR></TABLE>

the old tricks still work

 

I think after around 20-22psi, that stock turbo is outta efficientcy. I haven't been able to find a compressor map for that turbo however.

The turbo itself has instantaneous boost and crazy torque down low. Driving it around town is fantastic. It does lack high-end to me though.

The only weakness I can see is no lsd on 2003 models. Very narrow tires, narrow wheels, (205mm tires on something that puts out 220whp stock??), restrictive exhaust manifold.

It would also be really sweet if we could get WOT shifts with uberdata or something. I wonder what the programming is here though.

 

The compressor maps are on lock down from PVO. You may be right about the efficency of the turbo after 20-22 psi but there could still be room for more gains in power. Just not so good for the longevity of the turbo.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Unsung EM1 &raquo;</TD></TR><TR><TD CLASS="quote">Man I have much respect for the SRT-4's. TRUE factory performance. </TD></TR></TABLE>

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by R6Elmo &raquo;</TD></TR><TR><TD CLASS="quote">It would also be really sweet if we could get WOT shifts with uberdata or something. I wonder what the programming is here though.</TD></TR></TABLE>

Blake can do FTS/ FTL. I think he actually took the code out for the publicly released version. He also used to have an experimental anti-lag/ misfiring system, to keep the turbo spooled between shifts, he does crazy nasty things man.

-PHiZ

 

that ic is massive

 

Dodge Neon SRT-4 are AWESOME IMHO! HOLY TORQUE MONSTERS! Damn! The stock IC seems to be a good size also. i can't wait to see some really fast ones! I know Mike Crawford has one but I am looking more on the lines of Sport FWD type guys street cars. What is the fastest of those guys?

 

So far off the srt forums the quickest is a 12.37 @ 111.07 on the stock turbo and bfg drag radials just the other day. The car is from Psi-Fi Motorsports. They have some trick products coming out for the SRT and are prototyping them on their car. Piggyback ecu being the main one.

 

to Dodge for giving other car companies a nice swift kick in the *** to wake them up.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Rah Rah &raquo;</TD></TR><TR><TD CLASS="quote"> to Dodge for giving other car companies a nice swift kick in the *** to wake them up. </TD></TR></TABLE>

word.

now everyone has a big performance void to fill.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by GLHS895 &raquo;</TD></TR><TR><TD CLASS="quote"> 16-valve swap is the way to go!
</TD></TR></TABLE>

dont forget the neon head too...

 

also remember that its a 2.4 liter lol that means more fuel, which needs the 550s with the increased boost

 

Whoever was saying the stock turbo is small is crazy. It's a 16g, known to get heavier DSMs into the 11s easily, 10s in a few cases.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by turbohappy &raquo;</TD></TR><TR><TD CLASS="quote">Whoever was saying the stock turbo is small is crazy. It's a 16g, known to get heavier DSMs into the 11s easily, 10s in a few cases.</TD></TR></TABLE>
are you sure its a 16g...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ScrapinSi &raquo;</TD></TR><TR><TD CLASS="quote">

dont forget the neon head too... </TD></TR></TABLE>

oh yeah, can't forget the 2.4 head. believe it or not they flow better than the old 91-93 R/T heads (designed by lotus) and slightly better on the exhaust side than the ultra-rare maserati TC heads (designed by cosworth!). and i think modding a 2.4 head to fit a 2.2 block might actually be cheaper than finding all the necessary OE 16-valve parts in good condition

one of these days...

 

It's a 16g but not the one that the DSM's upgrade to. Its a much smaller 16g.