Paid and ordered stage 2 mods for the sprintex awd yesterday.

This will probably be the first sprintex awd with a haltech E8 (Dave at RPW recommended it).

apparently the E8 can tune over increments of 250rpm so it should be pretty smooth.

The bolt-ons are getting added in January after the sprintex warranty expires.

Haltech E8, temp sensor, MAP sensor
CAI
Extractors to bolt up to existing straight through system
390cc injectors
High Volume fuel pump 163L/hr
Oil/Air breather tank

The E8 and upgraded fuel system will do away with the 7th injector.

Dave from RPW also suggested modifying the fuel delivery-return so that all injectors get the same feed. This should solve some of the rear bank problems others have noted.

I'm keeping the normal 7.5psi boost, although on the last dyno run it made near 9psi before cut-out. This way it can keep stock internals.

The stage 3 mod (a 6G74 donk for custom build-up) is sitting in a corner gathering dust now, just waiting to see if the INVECS box can handle the stage 2 mods.

starting to look good nice work:D

How much is all that gonna cost?

Make sure you keep us updated as well as pics...:cool:

How much is all that gonna cost?


you know what that costs, and does it really matter?

we all know it costs a fortune and it's cheaper to sell and buy something else...

you know what that costs, and does it really matter?

we all know it costs a fortune and it's cheaper to sell and buy something else...
How do I know how much it costs? Perhaps you could break it down for me andrew because I don't know. I'm interested, and curious.

>temp sensor, MAP sensor


Errr... the IAT and MAP sensor used in the sprintex kit are haltech parts already...



Dave from RPW also suggested modifying the fuel delivery-return so that all injectors get the same feed. This should solve some of the rear bank problems others have noted.


The feed is on the rear bank, the return (via the fuel pressure regulator) is on the front.

Why would the rear have starvation issues when it is at the greatest pressure/flow?

Errr... the IAT and MAP sensor used in the sprintex kit are haltech parts already...



The feed is on the rear bank, the return (via the fuel pressure regulator) is on the front.

Why would the rear have starvation issues when it is at the greatest pressure/flow?

well then the front bank problem is now solved, my mistake.

you know what that costs, and does it really matter?

we all know it costs a fortune and it's cheaper to sell and buy something else...

yep, add the cost of the sprintex kit again and that would be close to the cost.

It became cheaper to buy something else the moment I started to modify. I'm still looking for a good RHD 1990's corvette to satisfy the need for detached retinas. 30 grand buys an 11 second capable fuel guzzler (probably with a spare engine too!).

How do I know how much it costs? Perhaps you could break it down for me andrew because I don't know. I'm interested, and curious.

ask TZABOY or sports

im sure they have reciepts for it all and could advise step by step.... i dont know all i had was a stock magna with an exhaust the sc kit tuned no other mods such as real computer or injectors or anything serious

ask TZABOY or sports

im sure they have reciepts for it all and could advise step by step.... i dont know all i had was a stock magna with an exhaust the sc kit tuned no other mods such as real computer or injectors or anything serious

but he asked tbb.

[QUOTE=tbb]yep, add the cost of the sprintex kit again and that would be close to the cost. /QUOTE]
besides he already answered it

nope disciple is being smart...

the man is no fool, but in previous posts he like to get up TBB's nose for claims that he has made...


to be honest who cares what it cost, we all know money is better spent elsewhere, and many other cars that cost less are faster stock... but where is the fun in that?

nope disciple is being smart...

the man is no fool, but in previous posts he like to get up TBB's nose for claims that he has made...


to be honest who cares what it cost, we all know money is better spent elsewhere, and many other cars that cost less are faster stock... but where is the fun in that?
andrew, honestly, STFU. I asked a simple question and tbb has answered it. You have problems man.

nope disciple is being smart...

the man is no fool, but in previous posts he like to get up TBB's nose for claims that he has made...


to be honest who cares what it cost, we all know money is better spent elsewhere, and many other cars that cost less are faster stock... but where is the fun in that?

Did you get out of the wrong side of the bed this morning? Lighten up.

Dave from RPW also suggested modifying the fuel delivery-return so that all injectors get the same feed. This should solve some of the rear bank problems others have noted.

What exactly did dave recommend you modify to solve this problem?? unless its multi entry points using the return line as a second feed line and then making a custom return line i would be seriously investigating ...

What exactly did dave recommend you modify to solve this problem?? unless its multi entry points using the return line as a second feed line and then making a custom return line i would be seriously investigating ...

Yep - thats the way to do it, but even then I think it would be overkill for what hes talking about doing.

When my TT setup was getting built - we looked at splitting the fuel feed to feed both rails at the same time, and return both rails from the front of the engine, under the plennum and back out - instead we opted just to upgrade the crappy little pipe that runs from the rear fuel rail to the front fuel rail - its about as wide as a drinking straw, so we replaced it with welded dash fittings attached to half inch braided high pressure hose.

What about a surge tank with an additional pump?

Take it elsewhere boys!!!! Back to thread. I'm insteresed in the costs as well.

What about a surge tank with an additional pump?

Shouldn't be needed on an AWD magna. Fuel starvation is something I know all to well about as I'm currently only running an upgraded intake fuel pump, in a non Ralliart / AWD magna with coilovers. I've had fuel starvation on long RH corners with as much as half a tank of fuel.

From what I understand - the AWD and Ralliarts got different fuel tanks which have a much better "swirl pot" design. I've never heard of an AWD or Ralliart owner having an issue with fuel starvation and I'm pretty sure it's for that reason.

Shouldn't be needed on an AWD magna. Fuel starvation is something I know all to well about as I'm currently only running an upgraded intake fuel pump, in a non Ralliart / AWD magna with coilovers. I've had fuel starvation on long RH corners with as much as half a tank of fuel.

From what I understand - the AWD and Ralliarts got different fuel tanks which have a much better "swirl pot" design. I've never heard of an AWD or Ralliart owner having an issue with fuel starvation and I'm pretty sure it's for that reason.

Would the internal baffles in the Ralliart's tank help out here?

I'm insteresed in the costs as well.

Not to sound like I'm taking anyones side here - but it's generally considered impolite to ask those questions publicly. If the OP wanted everyone to know how much he'd spent - he would have posted it.

If you're really interested because you want to do something similar, PM him, or ring RPW yourself.

Would the internal baffles in the Ralliart's tank help out here?

Yeah - thats exactly what I'm referring to. :cool:

What exactly did dave recommend you modify to solve this problem?? unless its multi entry points using the return line as a second feed line and then making a custom return line i would be seriously investigating ...

he sketched a line diagram with a fork that split to feed both sides at once, rather than the current loop. I don't know how the fuel gets back - it was merely a suggestion to alleviate my concerns over uneven fuel supply to each bank. I'll get a diagram out when its done, if we decide on this course of action.

he sketched a line diagram with a fork that split to feed both sides at once, rather than the current loop. I don't know how the fuel gets back - it was merely a suggestion to alleviate my concerns over uneven fuel supply to each bank. I'll get a diagram out when its done, if we decide on this course of action.

I suppose that could work to keep the pressures even between the two sides ...

Shouldn't be needed on an AWD magna. Fuel starvation is something I know all to well about as I'm currently only running an upgraded intake fuel pump, in a non Ralliart / AWD magna with coilovers. I've had fuel starvation on long RH corners with as much as half a tank of fuel.

From what I understand - the AWD and Ralliarts got different fuel tanks which have a much better "swirl pot" design. I've never heard of an AWD or Ralliart owner having an issue with fuel starvation and I'm pretty sure it's for that reason.

From talking to Cummins at Wakefield, he gets fuel starvation with his ralliart just the same as I do on the track. The only difference seems to he gets it a bit later then I do. E.g say I start experiencing surging when it gets below halfway on the fuel gauge, he's ok till say a 1/3 showing on the gauge (which is actually more like 1/2 a tank). I'm sure he'll correct me if I'm remembering wrongly :)

So the baffles help to an extent, but the problem is still there. According to one of the IPRA magna runners I spoke to, with the stock fuel system you should keep it around or above 3/4 of a tank to be safe on the track. This is why it's a good idea to bring a nice big jerrycan to track outings, so you can keep the tank topped up.

OP:

It has to be asked, why are you sticking with the awd platform, when you have made it clear in previous posts you are chasing performance? We all saw Andrewd running 14.4s with basically the same setup as what you're gonna have here.

14.4s is what a stock manual ralliart can do, or a few tenths quicker than a manual TJ sports/VRX. Us magna modders are use to getting inferior bang-for-buck on performance mods compared to the wrx/skyline/whatever crowd, but surely a manual FWD would have been a MUCH better platform for what you're doing?

Your choice of the E8 suggests this is not the end of your modding plans, however I hope you have a realistic sense of what you're gonna get out of pouring so much cash into an auto AWD...because to be honest it still aint gonna that quick, and will never handle well in a performance context, due to it's inherient flaw of being too nose-heavy for an AWD.

Regardless, I'll be interested to see your progress and what you do in the future :)

OP:

It has to be asked, why are you sticking with the awd platform, when you have made it clear in previous posts you are chasing performance? We all saw Andrewd running 14.4s with basically the same setup as what you're gonna have here.

14.4s is what a stock manual ralliart can do, or a few tenths quicker than a manual TJ sports/VRX. Us magna modders are use to getting inferior bang-for-buck on performance mods compared to the wrx/skyline/whatever crowd, but surely a manual FWD would have been a MUCH better platform for what you're doing?

Your choice of the E8 suggests this is not the end of your modding plans, however I hope you have a realistic sense of what you're gonna get out of pouring so much cash into an auto AWD...because to be honest it still aint gonna that quick, and will never handle well in a performance context, due to it's inherient flaw of being too nose-heavy for an AWD.

Regardless, I'll be interested to see your progress and what you do in the future :)

Me thinks stage two mods will break into the 13s on a cold day. If not, there will be some changes to the final drive ratios. I can either go lower and start in second (yes an interesting feature of the tippy) or higher and start in first. It still doesn't overcome the transmission losses, but the current ratios are far from optimum.

No wheelspin = no cops.

The awd although much maligned, does have a little bit of a traction and comfort advantage and I feel a bit more comfortable when my wife borrows the car to pick up the kids or a loaf of bread from the corner store. She certainly won't be getting the keys to the corvette.

This is not the same set up as andrewd although probably similar life expectancy.:redface:

tbb:

Of course, you could always go manual.

c'mon, someones gotta do it sooner or later !

Congrats for having the balls man. I'll follow with great interest.
One of the reasons I actively left this club is because of people like the ones posting in this thread.

Keep it up man.
F**k the nay sayers (You know who you are)

-Dan

tbb:

Of course, you could always go manual.

c'mon, someones gotta do it sooner or later !

Congrats for having the balls man. I'll follow with great interest.
One of the reasons I actively left this club is because of people like the ones posting in this thread.

Keep it up man.
F**k the nay sayers (You know who you are)

-Dan

thanks for the support, I'll share all technical details as they become available.

Manual? How can I eat a greaseburger and change gears at the same time?

thanks for the support, I'll share all technical details as they become available.

Manual? How can I eat a greaseburger and change gears at the same time?

mate, with the amount of torque you'll have, you could drop it in third and drive and drive it like an auto.

just make sure the diff you choose is strong enough!

cheers,
.wook

that's what the new v8 diesel landcruiser is like, put it into 4th and leave it there. Even around corners.

SImple. Dont eat and drive. Just asking for trouble

SImple. Dont eat and drive. Just asking for trouble

RBT = random burger testing

eat and drive = bloody fat idiot