TKERacer619

I took the car down the street earlier tonight. The turbo sounds amazing! Can't wait to get it tuned tomorrow.

TKERacer619

450@13.5 PSI! She isn't even trying. Ignore the wavy powerband, boost controller issues, will fix for next trip and will turn it up once I get boost by gear setup.

Props to Garrett for another bad *** turbo and thanks for those that gave their advice.

Brent hooked it up with a great tune at BTSpeed (PFI). Thanks Brent!

This shows a previous pull at 350hp with boost set by speed compared to today at a constant boost level. The lines cross exactly where I had hoped they would.

jdm_h22

Could we get some clarification on this?

I just read the service bulletin Aeromotive provided. It seems to me that it's not at all the Aeromotive340 in question here. The bulletin states that the cause of the 340 pump failure was a clogged post-pump filter, not because it couldn't handle E85.

The solution? Use the proper filter!!!

E85 naturally produces more contaminants due to its hygroscopic characteristics, regardless of the pump you use. So invest in a filter with the proper micron rating and surface area. Problem solved.


I just purchased an Aeromotive340. So this concern hit close to home

OP impressive numbers!

TKERacer619

Thanks

I burned about 3/4 of a tank just ******* it around town. I need to turn the boost down a little in 2nd, its perfect for 1st and 3rd, 4th and 5th can take more. Response is good for the street. It sounds mean as hell. The compressor is very loud at any throttle position.

The Summit Box, Mallory coil, and Send It Ignitor Bypass are working great, zero misfires. The wires already fell off once though... Same thing happened with the msd cap I had 6 years ago. I also find it funny that after all this time MSD still sends the wrong size screws with their distributor caps.

I might try to make something like this tomorrow. I suppose plastic would be best but aluminum is free and plentiful...

OneBadTurboCRV

The average user doesn't want to play around with changing or upgrading filters to to keep a warranty. When a company leans so far away from something - doesn't that tell you enough in itself? The Aeromotive is fully capable of running E85, I just feel the Walbro is a better solution. Unless a giant hair ball or major piece of filter broke off, a line/filter isn't going to clog instantly. A noticable change in pressure and drivability would occur before the pump should fail. To me, this is a scape goat for a product that doesn't belong. But hey, keep running it and prove me wrong...

wantboost

iTrader: (2)

if you don't debur and break the edges the aluminum will wear/cut through the insulation and cause arcing and unstable/unwanted ignition... and be careful with msd stuff... lots of failures lately

wantboost

iTrader: (2)

um think about what you just said... A filter with a very small micron rating will filter more media out of the fuel thus clogging the media faster... there by warranting the need for more frequent filter cleanings/replacements.

jdm_h22

Really? You've just invest thousands of dollars in engine & components (not to mention time) and you can't justify upgrading a fuel filter? Hm..

I am in no way ragging on Walbro's pumps. I've had great success with them. But accompanied with the appropriate filter, I believe the 340 can be just as reliable.

I'm especially biased since I own one. But like you said, proof is in the pudding. We'll see how long it lasts I guess.

jdm_h22

Um.. did you read what I posted? I never stated that using a very small micron rating was the solution. The exact OPPOSITE is true..

Where some may use as small as a 6 micron rated filter at the rail, 40 micron is more than adequate to prevent injector clogging. Tested and true.

Knowing that ethanol inevitably retains some plant "bio-mass" and that it absorbs water more so than petrol, it's a no brainer to change to a LOWER micron rating with MORE element surface area (Aeromotive recommends 60+ square inches), regardless of the pump you run.

dcmatt

iTrader: (7)

Where does the new turbo top out at? When fo you see full boost?

TKERacer619

He thinks I should be able to hit at least 550.

Boost is coming in strong around 4000rpm. Under that it will still make a couple lbs at part throttle and drives around town nicely.

Turbo-LS

iTrader: (4)

Nice powerband. Should try the msd cable ends that lock on instead of having to use the cheap ends and that little holder. I put these on my accel wires and they stay locked onto the dizzy cap

The plug ends are 3133
The cap is 82922

TheShodan

iTrader: (14)

I just used zip ties... Never came off after that.

Cole D

How does the spool up compare to GT28RS, do you feel like its just as responsive?

wantboost

iTrader: (2)

ahhh, i see it now lol... i always get confused sometimes that 1 micron is bigger than say... 60
I was sleep deprived when i posted my initial reply

wantboost

iTrader: (2)

very nice numbers... and at such a low presure ratio too. was this on pump gas?
its also nice to see the characteristics of both turbos placed on the same graph, really lets you see how the both behave. and im amazed to see just how soon the gtx spools in comparison to the 28rs.

What was the max boost pressure on the gt28? I think you could have seen a much bigger gain across the rpm range if you hadn't used boost by speed but i can imagine with such a responsive turbo traction would have been an issue

TKERacer619

This is what I will do long term. This cap doesn't even have the screw hole to mount the holder anyways.

This is what I did an hour or so ago. It seems the cups were not holding anything, it was just the contacts keeping them in place.

No it is not as responsive but not too far off. The power band shifted about 1000rpm higher. It matches the car a lot better.

Tune is on E85. They store every run you make . GT2860rs made 353 at 22psi. The potato was spooling too fast and causing wheel spin without boost by speed but good point. I will find the 353 pulls without the boost by speed for a better comparison next time I roll up there.

jdm_h22

It's all good in the hood. I agree w/ you on the graph. Nice to see characteristics of each side by side.

I'll be be running a similar turbo shortly. I'm stoked.

wantboost

iTrader: (2)

im gonna save that graph for the thousands of how does this turbo behave threads to come lol

TKERacer619

Nice I will get a better one soon though. That waviness drives me nuts but when you are driving you really don't notice it. Its the way I have the boost solenoid hooked up.

wantboost

iTrader: (2)

yea it looks like either the duty cycle was off, or the frequency of the signal needs to be tweaked

TKERacer619

Nah, I have the top and bottom referencing the same vacuum line off the manifold and split it by the wastegate with one side getting the solenoid. I need to get a reference point on the charge piping for the bottom vacuum fitting and run a second line. Should smooth it out. At least that is the theory.

This is a Mac valve. I am switching to the AVCR so I will probably use the one that came with that. I also have a Perrin on hand should I need it. One thing is for sure, I will be ready to get rid of that damn clicking noise you get from the aem boost control. If the AVCR does it, don't tell me. It has been so long since I have used it I cannot remember.

wantboost

iTrader: (2)

that would explain it

TKERacer619

It worked fine for a very long time. Just not at these levels.

I am going to have a threaded fitting welded onto the piping. I was thinking directly after the intercooler to keep the line short and in the bumper by the wastegate.

TKERacer619

Took it back to the dyno last week. Same boost levels but I switched from AEM boost control to an Apexi AVCR. Its still learning its duty cycles but it started to smooth the power out on its own.

Running on wastegate @ 8psi (360whp) in 1st and 2nd. 14psi (460wph) in 3rd, 4th, and 5th.

The 353 pull is with the gt2860rs in 3rd and the larger is with the gtx3071r in 4th.



The cold side of the intercooler was staying at ambient and the car doesn't seem to be working hard at all at this level. Might go back next week and see how it works with another 50hp in 4th and 5th but will probably wait for a newer larger intercooler before I go back. I think I can squeeze this Garrett core into the bumper with little effort and stock end tanks. They rate it at 600HP. http://www.atpturbo.com/mm5/merchant...egory_Code=INT