Question for blower Guru's

[carguy]

Just had both my cars tuned after installing tvs 2300's LT Headers Flow thru cats as well as corsa exhaust.

Both my L99 and LS3 cars ran out of fuel at the top of the RPM range. Both were running to lean for comfort so we had to scale back the rev limmiter to keep from leaning them out above 6400.

I was going to do a pulley swap and go for more boost on my LS3 but would have run out of fuel at 5800 rpm so I had to stay with stock 3.8 puley on LS3

I did manage tp pull off the 3.6 on the L99 but had to shut down Rev Limmiter at 6400. Not bad but still was starting to lean out.

So here is the question...what is everybody doing to get more fuel to these beasts. I was told people have ben having trouble with boost a pumps and to wait for a dual pump system that should be out soon.

I have heard of adding a second pump or tank in trunk after computer pick up but sounds like a bulky and quick fix. Should I just wait for the dual pump system or does someone know something I don't. I live in a climate where I can't set air fuel too lean because we get cold weather here and the dense air charge in the colder months cold cause a dangerous lean out condition and I don't want to go there.

Just thought maybe I was missing something somewhere. I would like a neat non bulky and reliable system...do I have to wait for the dual pump system that is now under development or is there something besides boost a pump out there I am un aware of.

Thanks for any suggestions you might have....

[Black GT]

I wonder if you could swap to the CTS-V fuel pump, if they are interchangeable.

If not your best bet would be to wait for the Z28 to come out and upgrade to one of those.

A good reason to turn up the boost.

[carguy]

Originally Posted by Black GT

I wonder if you could swap to the CTS-V fuel pump, if they are interchangeable.

If not your best bet would be to wait for the Z28 to come out and upgrade to one of those.

A good reason to turn up the boost.

Already making more RWHP than Proposed Z28. Cadillacs are only rated at 550hp at the Flywheel and I am already past that on both LS3 and L99 and Z28's more than likely won't have auto trans option...only guessing.

Again These Dyno reads are RWHP add 20% for drive train loss on L99 and 15% on LS3 for HP at the crank which is what is advertised HP on all Manufacturers HP claims.

At The flywheel LS3 ..602.60
L99...585.852

[Black GT]

I understand what your saying but.

EX. I upgraded my car to the GT500 fuel pumps, right now I'm sitting at 499 RWHP through an AUTO and I'm at 67% duty cycle for the fuel pumps.

Unless your planning on pushing insane boost I bet the Z28 pumps(when they come out) will work for you.

Fuel pumps also have nothing to do with what tranny your running either.

Hope this helps.

[10aSSee D]

What about the fastlane dual fuel pump?

[carguy]

Originally Posted by Black GT

I understand what your saying but.

EX. I upgraded my car to the GT500 fuel pumps, right now I'm sitting at 499 RWHP through an AUTO and I'm at 67% duty cycle for the fuel pumps.

Unless your planning on pushing insane boost I bet the Z28 pumps(when they come out) will work for you.

Fuel pumps also have nothing to do with what tranny your running either.

Hope this helps.

No but it shows up on dyno because of more drive train loss. I have no Idea why we were able to get by on the auto with more boost than the LS3 except that the only difference between the two cars is that the L99 auto has ARH headers and cats and The LS3 Has Kooks headers and cats.

I guess one could only assume the Kooks are flowing more air. Same primary size and exhaust only difference is Brand. Cats might flow better than KooKs
or it could be the smaller valves on the L99 heads thus increasing torque by increasing velocity but not flowing the volume of air therefor... not flowing as much fuel either, only a guess. I do appriciate the suggestions though...

I asked and welcome any and all possible solutions...Thanx

I will play with what I got for now...

As far as the comment about auto tranny I was only replying to the comment about wait until the Z28 comes out and get one of those. I was assuming you meant get a Z instead of current cars and one of which is an automatic. I am making the assumption that the Z28's will probably be a stick only car and that is only an assumption based on nothing but my humble opinion which again means nothing. Until That info is released I can only just guess.

[carguy]

Originally Posted by 10aSSee D

What about the fastlane dual fuel pump?

I will check it out...is it compatable with the pcm in the camaro ?

[10aSSee D]

I think AK

Originally Posted by carguy

I will check it out...is it compatable with the pcm in the camaro ?

I think so. It is a drop in assembly so you just take yours out and put this one in

[silverfox]

I also was running out of fuel on the dyno and at the dragstrip. Got the duece pump from fastlane and cured the problem. L99 was maxing out at 534rwhp and went up to 573 after pump install running a procharger at 9psi and mast stage 1 cam with arh lt.

[carguy]

Originally Posted by silverfox

I also was running out of fuel on the dyno and at the dragstrip. Got the duece pump from fastlane and cured the problem. L99 was maxing out at 534rwhp and went up to 573 after pump install running a procharger at 9psi and mast stage 1 cam with arh lt.

Good Info Thanks....

[DSteck]

Originally Posted by 10aSSee D

What about the fastlane dual fuel pump?

Originally Posted by carguy

I will check it out...is it compatable with the pcm in the camaro ?

It's just a CTS-V pump assembly. Works just fine in a Camaro.

[10aSSee D]

Originally Posted by DSteck

It's just a CTS-V pump assembly. Works just fine in a Camaro.

Don't you have to modify it to go in the camaro tank?

[HP junky]

ADM has a fuel system setup that they got 1000hp out of if i remember correctly. i believe he modified the stock system. its somewhere here on the forum. best bet would be to call Andy at ADM. he could tell ya all about it.

[DarricSS]

The Z28 is going to be the better road course car with most likely pedders or pfadt suspension added and same engine we have know. Give it a couple years and the updated SS will be the Big Dog again... Been that way since the beginning...

We all want it now, but patience is a virtue...

My crystal balls tells me:

Z28: Road course car (Awesome handling same 6.2 engine)
SS: Everyday Big Balls Car with nice crap added
ZL1: Supercharged SS (LSA) factory car to compete with GT500

"kneels down and prays"