steve-d

iTrader: (7)

Hello,

If you have a H&C car w/all the goodies and a good tune, will it be necessary to retune it after upgrading w/the LSX???

Its my understanding that if you've had the AF ratio set to around the generally accepted performance ratio of 12:1, then the computer will recognize the newly increased airflow and adjust accordingly. IOW, it'll increase the fuel flow to bring the ratio back to 12:1.

Am I missing something? Just thought I'd ask the collected brain trust about this as this is exactly where I am regarding an LSX install next week.

Best Regards
Steve

Smoke_ur_5.0

iTrader: (2)

We didn'y pick up anything with the 78mm LSX on a bolt on car until we tuned it. Picked up 6rwhp and 7rwtq but pick up 15hp and 10tq in the lower rpms.

Zero2Sixty

Yes it seems that tuning really seems to be helping ppl out with the LSX.
Glad to see you picked up some rwhp.....

JurisAg02

isn't this exactly what happened with the Weiland intake users also?

Speedfreaks101

I don't beleive that the LS6 intake leaves a lot to be improved on. GM designed a great intake and for an aftermarket manufactur to improve upon it in the rpm range that most of us use will be quite a feat IMO. Look at the sheetmetal versions in the aftermarket. How many of them boost low-midrange torque? None! They do boost high rpm HP though, but that is the desired rpm range. This is beacause of runner length, shape and plenum volume. I do think that the LSX is a superior intake but for a bolt on car it is not the wisest money spent. That 800.00 would go a long way to a nitrous kit, or even 1/3 of a 12 bolt. If you are already cammed with ported (or aftermarket) heads then it would show its value, but even at that point I think you would be better off with a 90 mm version. Not a flame jusy an opinion.

Sorry to hear about your numbers.

Later,
Bart

Cobraeater

Here's the graphs from LS1 Edit.
http://www.cobraeater.cz28.com/cgi-b...20Edit%201.jpg

http://www.cobraeater.cz28.com/cgi-b...20Edit%202.jpg

As you can see by the 13-15 run the a/f was around 13.0 and the hp and torque was the same as before the tuning.

So tuning didn't help.

Revelation222

Good lord, that has got to suck after all of that trouble. Sorry to hear that, bro. Lets hope you see the gains later, after cam and/or heads. But how would we really know you gained anything extra over the LS6 then either.

GrannySShifting

iTrader: (10)

it looks like it actually lost a tiny bit of low end. We had dissapointing results with one as well