Lexus isf ( i/h/ex) vs 335i jb4 with full bolt on
07-22-14, 09:56 PM
#16
Actually for a stock ISF it's not. I'd attach a DynoJet dyno run, but I might get a smart aleck remark from lobuxracer.
Apparently he thinks I'm trying to impress folks when I post 'em.
He doesn't care about no stinkin' dyno charts
Lou
Apparently he thinks I'm trying to impress folks when I post 'em.
Lou
Last edited by flowrider; 07-22-14 at 10:01 PM.
07-22-14, 10:45 PM
#17
Lexus Fanatic
. Pretty easy to make power with a turbo. Turbos can make solid gains with very basic bolt ons and some ECU tuning. Much easier than trying to tune a NA motor
07-23-14, 06:20 AM
#19
335i wins, then it starts making some wierd noise and has to be taken to the shop, then on your way home you see at least 6 more 335's
Last edited by scamsel; 07-23-14 at 06:26 AM.
07-23-14, 06:44 AM
#20
Lexus Test Driver
Depends on what "FULL BOLT-ONS" are and if its tuned.
I'm taking the 335i since it will have substantially more torque than the IS-F due to the turbo. Ive seen some 335's throw down 400hp with 450-475 tq. Only deal breaker that is that every 335i that I see that races an IS-F loses though so its gonna be a tossup. idk what the gearing is on an 335 so that can be the decision maker
I'm taking the 335i since it will have substantially more torque than the IS-F due to the turbo. Ive seen some 335's throw down 400hp with 450-475 tq. Only deal breaker that is that every 335i that I see that races an IS-F loses though so its gonna be a tossup. idk what the gearing is on an 335 so that can be the decision maker
07-23-14, 09:40 AM
#21
Pole Position
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I'll weigh in on this since most of my friends have BMWs and I've done friendly pulls through Mexico against a lot of them.
From my experience, the big factor is if it's an N54 (twin turbo) or N55 (single turbo) engine.
I have intake elbow, headers, and exhaust and here are my results:
ISF v. N54 335i auto (FMIC, cone filters, downpipes, exhaust, meth injection, JB4) : Lost
ISF v. N54 135i auto (same as above plus RB turbo upgrade, E85, and stacked Cobb/JB tune) : I got destroyed
ISF v. N55 135i manual (FMIC, cone filters, downpipe, exhaust, JB4) : Won, but dead even until he shifted
ISF v. N55 X1 auto (FMIC, cone filters, downpipe, stock exhaust, meth, JB4): Won.
From my experience, the big factor is if it's an N54 (twin turbo) or N55 (single turbo) engine.
I have intake elbow, headers, and exhaust and here are my results:
ISF v. N54 335i auto (FMIC, cone filters, downpipes, exhaust, meth injection, JB4) : Lost
ISF v. N54 135i auto (same as above plus RB turbo upgrade, E85, and stacked Cobb/JB tune) : I got destroyed
ISF v. N55 135i manual (FMIC, cone filters, downpipe, exhaust, JB4) : Won, but dead even until he shifted
ISF v. N55 X1 auto (FMIC, cone filters, downpipe, stock exhaust, meth, JB4): Won.
07-23-14, 11:03 AM
#23
Racer
wow big difference between the borla and JoeZ exhaust runs.
I'm guessing these were different cars, dynoed on different dynos on different days?
I'm guessing these were different cars, dynoed on different dynos on different days?
07-23-14, 04:04 PM
#25
Racer
Interesting, never realised there was that much of a difference between the two exhausts.
07-23-14, 07:48 PM
#28
Really depends if the 335i is just FBO on pump gas or running any sort of E85/race gas/or meth. FBO for a N54 means: tune, downpipes, intercooler, exhaust, intake. And they usually dyno around 380-400whp ish on just pump gas with a lot more torque. The stock turbos really runs out of steam past 6k RPM, & for a highway run, I'd give the edge to the modded ISF. Now if it is running meth, race gas or E85 (Maybe all of them) I would give the nod to the 335i. Upgraded turbos then no question, 335i. The fun per dollar ratio was amazing on that car, when it was running.
Last edited by ImportISF; 07-23-14 at 07:52 PM.
07-23-14, 09:23 PM
#29
I'll weigh in on this since most of my friends have BMWs and I've done friendly pulls through Mexico against a lot of them.
From my experience, the big factor is if it's an N54 (twin turbo) or N55 (single turbo) engine.
I have intake elbow, headers, and exhaust and here are my results:
ISF v. N54 335i auto (FMIC, cone filters, downpipes, exhaust, meth injection, JB4) : Lost
ISF v. N54 135i auto (same as above plus RB turbo upgrade, E85, and stacked Cobb/JB tune) : I got destroyed
ISF v. N55 135i manual (FMIC, cone filters, downpipe, exhaust, JB4) : Won, but dead even until he shifted
ISF v. N55 X1 auto (FMIC, cone filters, downpipe, stock exhaust, meth, JB4): Won.
From my experience, the big factor is if it's an N54 (twin turbo) or N55 (single turbo) engine.
I have intake elbow, headers, and exhaust and here are my results:
ISF v. N54 335i auto (FMIC, cone filters, downpipes, exhaust, meth injection, JB4) : Lost
ISF v. N54 135i auto (same as above plus RB turbo upgrade, E85, and stacked Cobb/JB tune) : I got destroyed
ISF v. N55 135i manual (FMIC, cone filters, downpipe, exhaust, JB4) : Won, but dead even until he shifted
ISF v. N55 X1 auto (FMIC, cone filters, downpipe, stock exhaust, meth, JB4): Won.
